Base: Update cookie test page to include unretrievable cookies

"Unretrievable" meaning from JavaScript via document.cookie. They are
settable though and may be viewed with the Dump Cookies command in the
Browser.

Base/res/html/misc/cookie.html

@@ -2,7 +2,7 @@
     <h3>Valid cookies:</h3>
     <br /><input type=button onclick="setCookie(this.value)" value="cookie1=value1; max-age=5; path=/res/html" />
     <br /><input type=button onclick="setCookie(this.value)" value="cookie2=value2; expires=Sat, 23 Jan 2060 08:10:36 GMT" />
-    <br /><input type=button onclick="setCookie(this.value)" value="cookie3=value3; secure" />
+    <br /><input type=button onclick="setCookie(this.value)" value="cookie3=value3" />
     <br />
 
     <h3>Invalid cookies (the browser should reject these):</h3>
@@ -16,6 +16,13 @@
     <label for=invalid4>The cookie expired in the past</label>
     <br />
 
+    <h3>Unretrievable cookies (the browser should accept these but not display them):</h3>
+    <br /><input id=locked1 type=button onclick="setCookie(this.value)" value="cookie8=value8; path=/not/this/path" />
+    <label for=locked1>The Path attribute does not path-match this page</label>
+    <br /><input id=locked2 type=button onclick="setCookie(this.value)" value="cookie9=value9; secure" />
+    <label for=locked2>The cookie is Secure thus cannot be viewed by a file:// page</label>
+    <br />
+
     <pre>document.cookie = <span id=cookies></span></pre>
 
     <script>