Implement a ResourceThrottle for URL overriding in Chrome on Android.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 5242ef92db0626124eb7cea778404662db492f2f..2adc6e75b0dc75f5861a2a8723066e29b436b1c9 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -311,6 +311,11 @@ class CONTENT_EXPORT WebContentsImpl
       int64 source_frame_id,
       const content::GlobalRequestID& transferred_global_request_id) OVERRIDE;
   virtual void RouteCloseEvent(content::RenderViewHost* rvh) OVERRIDE;
+  virtual bool ShouldIgnoreNavigation(
+      content::RenderViewHost* rvh,
+      const GURL& url,
+      const content::Referrer& referrer,
+      bool is_content_initiated) OVERRIDE;
   virtual void RunJavaScriptMessage(content::RenderViewHost* rvh,
                                     const string16& message,
                                     const string16& default_prompt,