From: csagan5 <32685696+csagan5@users.noreply.github.com>
Date: Thu, 5 Dec 2019 22:41:25 +0100
Subject: Add option to configure the ad blocker filters URL

---
 chrome/android/chrome_java_resources.gni      |  2 +
 chrome/android/chrome_java_sources.gni        |  2 +
 .../java/res/layout/adblock_editor.xml        | 67 ++++++++++++++
 chrome/android/java/res/values/values.xml     |  2 +
 .../java/res/xml/adblock_preferences.xml      | 25 +++++
 .../android/java/res/xml/main_preferences.xml |  5 +
 .../browser/settings/AdBlockEditor.java       | 92 +++++++++++++++++++
 .../browser/settings/AdBlockPreferences.java  | 61 ++++++++++++
 chrome/app/generated_resources.grd            | 10 ++
 chrome/browser/browser_process_impl.cc        |  3 +-
 .../flags/android/cached_feature_flags.cc     | 11 +++
 .../browser/flags/CachedFeatureFlags.java     | 10 ++
 .../net/system_network_context_manager.cc     |  4 +
 .../strings/android_chrome_strings.grd        | 14 +++
 chrome/common/pref_names.cc                   |  3 +
 chrome/common/pref_names.h                    |  1 +
 .../adblock_updater_service.cc                |  6 +-
 .../adblock_updater_service.h                 |  3 +-
 18 files changed, 316 insertions(+), 5 deletions(-)
 create mode 100644 chrome/android/java/res/layout/adblock_editor.xml
 create mode 100644 chrome/android/java/res/xml/adblock_preferences.xml
 create mode 100644 chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockEditor.java
 create mode 100644 chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockPreferences.java

diff --git a/chrome/android/chrome_java_resources.gni b/chrome/android/chrome_java_resources.gni
--- a/chrome/android/chrome_java_resources.gni
+++ b/chrome/android/chrome_java_resources.gni
@@ -826,6 +826,7 @@ chrome_java_resources = [
   "java/res/layout/account_picker_new_account_row_legacy.xml",
   "java/res/layout/account_picker_row.xml",
   "java/res/layout/account_picker_row_legacy.xml",
+  "java/res/layout/adblock_editor.xml",
   "java/res/layout/add_languages_main.xml",
   "java/res/layout/add_to_homescreen_dialog.xml",
   "java/res/layout/auto_sign_in_first_run_dialog.xml",
@@ -1106,6 +1107,7 @@ chrome_java_resources = [
   "java/res/xml/about_chrome_preferences.xml",
   "java/res/xml/accessibility_preferences.xml",
   "java/res/xml/account_management_preferences.xml",
+  "java/res/xml/adblock_preferences.xml",
   "java/res/xml/autofill_server_profile_preferences.xml",
   "java/res/xml/bookmark_widget_info.xml",
   "java/res/xml/clear_browsing_data_preferences_tab.xml",
diff --git a/chrome/android/chrome_java_sources.gni b/chrome/android/chrome_java_sources.gni
--- a/chrome/android/chrome_java_sources.gni
+++ b/chrome/android/chrome_java_sources.gni
@@ -1307,6 +1307,8 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/photo_picker/DecodeVideoTask.java",
   "java/src/org/chromium/chrome/browser/photo_picker/DecoderService.java",
   "java/src/org/chromium/chrome/browser/photo_picker/DecoderServiceHost.java",
+  "java/src/org/chromium/chrome/browser/settings/AdBlockEditor.java",
+  "java/src/org/chromium/chrome/browser/settings/AdBlockPreferences.java",
   "java/src/org/chromium/chrome/browser/photo_picker/FileEnumWorkerTask.java",
   "java/src/org/chromium/chrome/browser/photo_picker/PhotoPickerDialog.java",
   "java/src/org/chromium/chrome/browser/photo_picker/PhotoPickerToolbar.java",
diff --git a/chrome/android/java/res/layout/adblock_editor.xml b/chrome/android/java/res/layout/adblock_editor.xml
new file mode 100644
--- /dev/null
+++ b/chrome/android/java/res/layout/adblock_editor.xml
@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2015 The Chromium Authors. All rights reserved.
+     Use of this source code is governed by a BSD-style license that can be
+     found in the LICENSE file. -->
+
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:id="@+id/scroll_view"
+        android:fillViewport="true" >
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:focusableInTouchMode="true" >
+
+            <com.google.android.material.textfield.TextInputLayout
+                android:id="@+id/adblock_url"
+                android:paddingTop="16dp"
+                android:paddingStart="@dimen/pref_autofill_content_spacing"
+                android:paddingEnd="@dimen/pref_autofill_content_spacing"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" >
+                <!-- TODO(crbug.com/900912): Fix and remove lint ignore -->
+                <EditText
+                    tools:ignore="Autofill"
+                    android:id="@+id/adblock_url_edit"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:inputType="textUri"
+                    android:singleLine="true"
+                    android:hint="@string/options_adblock_edit_label" />
+            </com.google.android.material.textfield.TextInputLayout>
+
+            <Space style="@style/ButtonBarTopSpacer" />
+            <View style="@style/ButtonBarTopDivider" />
+
+            <LinearLayout style="@style/ButtonBar" >
+                <org.chromium.ui.widget.ButtonCompat
+                    android:id="@+id/adblock_reset"
+                    style="@style/ButtonBarButton"
+                    android:text="@string/reset" />
+
+                <org.chromium.ui.widget.ButtonCompat
+                    android:id="@+id/adblock_cancel"
+                    style="@style/ButtonBarButton"
+                    android:text="@string/cancel" />
+
+                <org.chromium.ui.widget.ButtonCompat
+                    android:id="@+id/adblock_save"
+                    style="@style/ButtonBarButton"
+                    android:text="@string/save" />
+            </LinearLayout>
+        </LinearLayout>
+    </ScrollView>
+
+    <include layout="@layout/settings_action_bar_shadow"/>
+
+</FrameLayout>
diff --git a/chrome/android/java/res/values/values.xml b/chrome/android/java/res/values/values.xml
--- a/chrome/android/java/res/values/values.xml
+++ b/chrome/android/java/res/values/values.xml
@@ -41,6 +41,8 @@
     <!-- Our manage space activity. Default pre-KitKat to be nothing. -->
     <string name="manage_space_activity"></string>
 
+    <string name="adblock_help_url">https://www.bromite.org/custom-filters</string>
+
     <string name="proxy_title">Proxy configuration</string>
     <string name="proxy_url">chrome://proxy</string>
 
diff --git a/chrome/android/java/res/xml/adblock_preferences.xml b/chrome/android/java/res/xml/adblock_preferences.xml
new file mode 100644
--- /dev/null
+++ b/chrome/android/java/res/xml/adblock_preferences.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2015 The Chromium Authors. All rights reserved.
+     Use of this source code is governed by a BSD-style license that can be
+     found in the LICENSE file. -->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <org.chromium.components.browser_ui.settings.ChromeSwitchPreference
+        android:key="adblock_switch"
+        android:summaryOn="@string/text_on"
+        android:summaryOff="@string/text_off" />
+
+    <org.chromium.chrome.browser.about_settings.HyperlinkPreference
+        android:key="adblock_help"
+        android:title="@string/adblock_help"
+        app:url="@string/adblock_help_url" />
+
+    <Preference
+        android:key="adblock_edit"
+        android:title="@string/options_adblock_edit_label"
+        android:fragment="org.chromium.chrome.browser.settings.AdBlockEditor" />
+
+</PreferenceScreen>
diff --git a/chrome/android/java/res/xml/main_preferences.xml b/chrome/android/java/res/xml/main_preferences.xml
--- a/chrome/android/java/res/xml/main_preferences.xml
+++ b/chrome/android/java/res/xml/main_preferences.xml
@@ -89,6 +89,11 @@
         android:key="privacy"
         android:order="18"
         android:title="@string/prefs_privacy"/>
+    <Preference
+        android:fragment="org.chromium.chrome.browser.settings.AdBlockPreferences"
+        android:key="adblock"
+        android:order="13"
+        android:title="@string/prefs_adblock"/>
     <Preference
         android:fragment="org.chromium.chrome.browser.accessibility.settings.AccessibilitySettings"
         android:key="accessibility"
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockEditor.java b/chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockEditor.java
new file mode 100644
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockEditor.java
@@ -0,0 +1,92 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.settings;
+
+import android.os.Bundle;
+import androidx.fragment.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.EditText;
+
+import org.chromium.components.browser_ui.settings.SettingsUtils;
+import org.chromium.chrome.browser.flags.CachedFeatureFlags;
+import org.chromium.chrome.R;
+import org.chromium.components.url_formatter.UrlFormatter;
+
+/**
+ * Provides the Java-UI for editing AdBlock preferences.
+ */
+public class AdBlockEditor extends Fragment implements TextWatcher {
+    private EditText mAdBlockFiltersUrlEdit;
+    private Button mSaveButton;
+    private Button mResetButton;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        getActivity().setTitle(R.string.options_adblock_edit_title);
+
+        View v = inflater.inflate(R.layout.adblock_editor, container, false);
+        View scrollView = v.findViewById(R.id.scroll_view);
+        scrollView.getViewTreeObserver().addOnScrollChangedListener(
+                SettingsUtils.getShowShadowOnScrollListener(v, v.findViewById(R.id.shadow)));
+        mAdBlockFiltersUrlEdit = (EditText) v.findViewById(R.id.adblock_url_edit);
+        mAdBlockFiltersUrlEdit.setText(CachedFeatureFlags.getAdBlockFiltersURL());
+        mAdBlockFiltersUrlEdit.addTextChangedListener(this);
+        mAdBlockFiltersUrlEdit.requestFocus();
+
+        initializeSaveCancelResetButtons(v);
+        return v;
+    }
+
+    @Override
+    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+    }
+
+    @Override
+    public void onTextChanged(CharSequence s, int start, int before, int count) {
+        mSaveButton.setEnabled(s.length() != 0);
+        mResetButton.setEnabled(true);
+    }
+
+    @Override
+    public void afterTextChanged(Editable s) {
+    }
+
+    private void initializeSaveCancelResetButtons(View v) {
+        mResetButton = (Button) v.findViewById(R.id.adblock_reset);
+        mResetButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mAdBlockFiltersUrlEdit.setText(CachedFeatureFlags.getAdBlockFiltersURL());
+                getActivity().finish();
+            }
+        });
+
+        mSaveButton = (Button) v.findViewById(R.id.adblock_save);
+        mSaveButton.setEnabled(false);
+        mSaveButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                CachedFeatureFlags.setAdBlockFiltersURL(
+                        UrlFormatter.fixupUrl(mAdBlockFiltersUrlEdit.getText().toString()).getSpec());
+                getActivity().finish();
+            }
+        });
+
+        Button button = (Button) v.findViewById(R.id.adblock_cancel);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                getActivity().finish();
+            }
+        });
+    }
+}
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockPreferences.java b/chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockPreferences.java
new file mode 100644
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/settings/AdBlockPreferences.java
@@ -0,0 +1,61 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.settings;
+
+import android.os.Bundle;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceFragmentCompat;
+import org.chromium.components.browser_ui.settings.ChromeSwitchPreference;
+
+import org.chromium.components.embedder_support.browser_context.BrowserContextHandle;
+import org.chromium.components.browser_ui.site_settings.SiteSettingsPreferenceFragment;
+import org.chromium.components.browser_ui.site_settings.WebsitePreferenceBridge;
+import org.chromium.components.content_settings.ContentSettingsType;
+import org.chromium.components.browser_ui.settings.SettingsUtils;
+import org.chromium.chrome.browser.flags.CachedFeatureFlags;
+import androidx.annotation.VisibleForTesting;
+import org.chromium.chrome.R;
+
+/**
+ * Fragment that allows the user to configure AdBlock related preferences.
+ */
+public class AdBlockPreferences extends SiteSettingsPreferenceFragment {
+    @VisibleForTesting
+    public static final String PREF_ADBLOCK_SWITCH = "adblock_switch";
+    private static final String PREF_ADBLOCK_EDIT = "adblock_edit";
+
+    private Preference mAdBlockEdit;
+
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        getActivity().setTitle(R.string.options_adblock_title);
+        SettingsUtils.addPreferencesFromResource(this, R.xml.adblock_preferences);
+
+        BrowserContextHandle browserContextHandle =
+                getSiteSettingsClient().getBrowserContextHandle();
+
+        ChromeSwitchPreference mAdBlockSwitch =
+                (ChromeSwitchPreference) findPreference(PREF_ADBLOCK_SWITCH);
+        boolean isAdBlockEnabled = !WebsitePreferenceBridge.isCategoryEnabled(browserContextHandle, ContentSettingsType.ADS);
+        mAdBlockSwitch.setChecked(isAdBlockEnabled);
+        mAdBlockSwitch.setOnPreferenceChangeListener((preference, newValue) -> {
+            WebsitePreferenceBridge.setCategoryEnabled(browserContextHandle, ContentSettingsType.ADS, !(boolean) newValue);
+            return true;
+        });
+
+        mAdBlockEdit = findPreference(PREF_ADBLOCK_EDIT);
+        updateCurrentAdBlockUrl();
+    }
+
+    private void updateCurrentAdBlockUrl() {
+        mAdBlockEdit.setSummary(CachedFeatureFlags.getAdBlockFiltersURL());
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        updateCurrentAdBlockUrl();
+    }
+}
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -10047,6 +10047,16 @@ Please help our engineers fix this problem. Tell us what happened right before y
       Never show this again.
     </message>
 
+    <!-- Ad Blocking preferences -->
+    <if expr="is_android">
+      <message name="IDS_OPTIONS_ADBLOCK_TITLE" desc="The title of the Ad Blocking option on Android" formatter_data="android_java">
+        Ad Blocking
+      </message>
+      <message name="IDS_OPTIONS_ADBLOCK_SUMMARY" desc="The title of the Ad Blocking summary on Android" formatter_data="android_java">
+        Configure Ad Blocking and filters URL
+      </message>
+    </if>
+
     <!-- Ad Blocking UI strings. -->
     <message name="IDS_ALWAYS_ALLOW_ADS" desc="Explanation associated with a toggle to allow ads after ads have been blocked on the page. To be used on pages where the ad blocking UI is governed by a persistent permissions-based whitelist.">
       Always allow ads on this site
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -1066,7 +1066,8 @@ BrowserProcessImpl::adblock_updater() {
   adblock_updater_ = std::make_unique<adblock_updater::AdBlockUpdaterService>(
           g_browser_process->system_network_context_manager()->GetSharedURLLoaderFactory(),
           std::move(scheduler),
-          g_browser_process->subresource_filter_ruleset_service());
+          g_browser_process->subresource_filter_ruleset_service(),
+          local_state()->GetString(prefs::kAdBlockFiltersURL));
 
   return adblock_updater_.get();
 }
diff --git a/chrome/browser/flags/android/cached_feature_flags.cc b/chrome/browser/flags/android/cached_feature_flags.cc
--- a/chrome/browser/flags/android/cached_feature_flags.cc
+++ b/chrome/browser/flags/android/cached_feature_flags.cc
@@ -8,6 +8,9 @@
 
 #include "base/android/jni_string.h"
 #include "base/feature_list.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/common/pref_names.h"
+#include "components/prefs/pref_service.h"
 #include "content/public/common/content_features.h"
 #include "content/public/common/network_service_util.h"
 
@@ -41,3 +44,11 @@ static jboolean JNI_CachedFeatureFlags_IsNetworkServiceWarmUpEnabled(
   return content::IsOutOfProcessNetworkService() &&
          base::FeatureList::IsEnabled(features::kWarmUpNetworkProcess);
 }
+
+static ScopedJavaLocalRef<jstring> JNI_CachedFeatureFlags_GetAdBlockFiltersURL(JNIEnv* env) {
+  return base::android::ConvertUTF8ToJavaString(env, g_browser_process->local_state()->GetString(prefs::kAdBlockFiltersURL));
+}
+
+static void JNI_CachedFeatureFlags_SetAdBlockFiltersURL(JNIEnv* env, const JavaParamRef<jstring>& url) {
+  g_browser_process->local_state()->SetString(prefs::kAdBlockFiltersURL, base::android::ConvertJavaStringToUTF8(env, url));
+}
diff --git a/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/CachedFeatureFlags.java b/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/CachedFeatureFlags.java
--- a/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/CachedFeatureFlags.java
+++ b/chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/CachedFeatureFlags.java
@@ -260,6 +260,14 @@ public class CachedFeatureFlags {
                         ChromeFeatureList.REACHED_CODE_PROFILER, "sampling_interval_us", 0));
     }
 
+     public static void setAdBlockFiltersURL(String url) {
+         CachedFeatureFlagsJni.get().setAdBlockFiltersURL(url);
+     }
+
+     public static String getAdBlockFiltersURL() {
+         return CachedFeatureFlagsJni.get().getAdBlockFiltersURL();
+     }
+
     /**
      * Caches flags that must take effect on startup but are set via native code.
      */
@@ -412,5 +420,7 @@ public class CachedFeatureFlags {
     @NativeMethods
     interface Natives {
         boolean isNetworkServiceWarmUpEnabled();
+        void setAdBlockFiltersURL(String url);
+        String getAdBlockFiltersURL();
     }
 }
diff --git a/chrome/browser/net/system_network_context_manager.cc b/chrome/browser/net/system_network_context_manager.cc
--- a/chrome/browser/net/system_network_context_manager.cc
+++ b/chrome/browser/net/system_network_context_manager.cc
@@ -331,6 +331,8 @@ SystemNetworkContextManager::SystemNetworkContextManager(
           SSLConfigServiceManager::CreateDefaultManager(local_state_)),
       proxy_config_monitor_(local_state_),
       stub_resolver_config_reader_(local_state_) {
+  local_state_->SetDefaultPrefValue(prefs::kAdBlockFiltersURL,
+                                    base::Value("https://www.bromite.org/filters/filters.dat"));
 #if !defined(OS_ANDROID)
   // QuicAllowed was not part of Android policy.
   const base::Value* value =
@@ -393,6 +395,8 @@ SystemNetworkContextManager::~SystemNetworkContextManager() {
 void SystemNetworkContextManager::RegisterPrefs(PrefRegistrySimple* registry) {
   StubResolverConfigReader::RegisterPrefs(registry);
 
+  registry->RegisterStringPref(prefs::kAdBlockFiltersURL, std::string());
+
   // Static auth params
   registry->RegisterStringPref(prefs::kAuthSchemes,
                                "basic,digest,ntlm,negotiate");
diff --git a/chrome/browser/ui/android/strings/android_chrome_strings.grd b/chrome/browser/ui/android/strings/android_chrome_strings.grd
--- a/chrome/browser/ui/android/strings/android_chrome_strings.grd
+++ b/chrome/browser/ui/android/strings/android_chrome_strings.grd
@@ -214,6 +214,20 @@ CHAR-LIMIT guidelines:
         Enter VR
       </message>
 
+      <!-- AdBlock settings -->
+      <message name="IDS_PREFS_ADBLOCK" desc="Title of the AdBlock Settings screen. [CHAR-LIMIT=32]">
+        AdBlock settings
+      </message>
+      <message name="IDS_OPTIONS_ADBLOCK_EDIT_TITLE" desc="The title of the screen that allows users to change the URL that is used to fetch the ad blocker filters.">
+        Edit filters URL
+      </message>
+      <message name="IDS_OPTIONS_ADBLOCK_EDIT_LABEL" desc="The label for the edit text field that allows the user to change the URL that is used to fetch the ad blocker filters.">
+        Filters URL
+      </message>
+      <message name="IDS_ADBLOCK_HELP" desc="The title of the hyperlink that allows users to visit the web page with instructions for custom ad blocker filters.">
+        Visit help page
+      </message>
+
       <!-- Notification channels -->
       <message name="IDS_NOTIFICATION_CATEGORY_GROUP_GENERAL" desc='Subheading for "General" section of a list of notification categories. [CHAR-LIMIT=32]'>
         General
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -2103,6 +2103,9 @@ const char kAudioCaptureAllowed[] = "hardware.audio_capture_enabled";
 // capture devices without prompt.
 const char kAudioCaptureAllowedUrls[] = "hardware.audio_capture_allowed_urls";
 
+// Holds the URL to an indexed subresource filters file.
+const char kAdBlockFiltersURL[] = "adblock.filters_url";
+
 // A pref holding the value of the policy used to explicitly allow or deny
 // access to video capture devices.  When enabled or not set, the user is
 // prompted for device access.  When disabled, access to video capture devices
diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -30,6 +30,7 @@ extern const char kDownloadRestrictions[];
 extern const char kForceEphemeralProfiles[];
 extern const char kHomePageIsNewTabPage[];
 extern const char kHomePage[];
+extern const char kAdBlockFiltersURL[];
 extern const char kImportantSitesDialogHistory[];
 extern const char kProfileCreationTime[];
 #if defined(OS_WIN)
diff --git a/components/component_updater/adblock_updater_service.cc b/components/component_updater/adblock_updater_service.cc
--- a/components/component_updater/adblock_updater_service.cc
+++ b/components/component_updater/adblock_updater_service.cc
@@ -46,12 +46,12 @@ const int initial_check_delay = 5,
       next_check_delay = 60*60*24*7, // 1 week
       on_demand_check_delay = 60; // minimum 1 minute between each on-demand check
 
-AdBlockUpdaterService::AdBlockUpdaterService(scoped_refptr<network::SharedURLLoaderFactory> shared_url_network_factory, std::unique_ptr<component_updater::UpdateScheduler> scheduler, subresource_filter::RulesetService* ruleset_service)
+AdBlockUpdaterService::AdBlockUpdaterService(scoped_refptr<network::SharedURLLoaderFactory> shared_url_network_factory, std::unique_ptr<component_updater::UpdateScheduler> scheduler,
+   subresource_filter::RulesetService* ruleset_service, std::string filters_url)
  : ruleset_service_(ruleset_service), shared_url_network_factory_(shared_url_network_factory), scheduler_(std::move(scheduler)) {
   DCHECK(ruleset_service);
 
-  //TODO: retrieve filters URL from config/prefs
-  filters_url_ = "https://www.bromite.org/filters/filters.dat";
+  filters_url_ = filters_url;
 }
 
 AdBlockUpdaterService::~AdBlockUpdaterService() {
diff --git a/components/component_updater/adblock_updater_service.h b/components/component_updater/adblock_updater_service.h
--- a/components/component_updater/adblock_updater_service.h
+++ b/components/component_updater/adblock_updater_service.h
@@ -54,7 +54,8 @@ class Observer {
 // All methods are safe to call ONLY from the browser's main thread.
 class AdBlockUpdaterService {
  public:
-  AdBlockUpdaterService(scoped_refptr<network::SharedURLLoaderFactory> shared_url_network_factory, std::unique_ptr<component_updater::UpdateScheduler> scheduler, subresource_filter::RulesetService* ruleset_service);
+  AdBlockUpdaterService(scoped_refptr<network::SharedURLLoaderFactory> shared_url_network_factory, std::unique_ptr<component_updater::UpdateScheduler> scheduler,
+                        subresource_filter::RulesetService* ruleset_service, std::string filters_url);
   ~AdBlockUpdaterService();
 
   // Adds an observer for this class. An observer should not be added more
-- 
2.17.1