Content settings: whitelist kExtensionScheme and kChromeInternalScheme on the renderer side.

chrome/renderer/content_settings_observer.h

Index: chrome/renderer/content_settings_observer.h
diff --git a/chrome/renderer/content_settings_observer.h b/chrome/renderer/content_settings_observer.h
index a76e71cc226b8dfa2efa6b30e2f50d14192549ca..027867cad6727f0f9cb8a8792e75eaf81c439dfc 100644
--- a/chrome/renderer/content_settings_observer.h
+++ b/chrome/renderer/content_settings_observer.h
@@ -66,6 +66,8 @@ class ContentSettingsObserver
   void DidNotAllowScript(WebKit::WebFrame* frame);
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(ContentSettingsObserverTest, WhitelistedSchemes);
+
   // RenderViewObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void DidCommitProvisionalLoad(WebKit::WebFrame* frame,
@@ -77,6 +79,13 @@ class ContentSettingsObserver
   // Resets the |content_blocked_| array.
   void ClearBlockedContentSettings();
 
+  // Helpers.
+  // True if |frame| contains content that is white-listed for content settings.
+  static bool IsWhitelistedForContentSettings(WebKit::WebFrame* frame);
+  static bool IsWhitelistedForContentSettings(
+      const WebKit::WebSecurityOrigin& origin,
+      const GURL& document_url);
+
   // A pointer to content setting rules stored by the renderer. Normally, the
   // |RendererContentSettingRules| object is owned by
   // |ChromeRenderProcessObserver|. In the tests it is owned by the caller of