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 1dc61b3525f3626ff62ba23f107cc9bb8ecb2056..c7bbfea2687fe9ae8d95d9d1954053e76d1e0b83 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -248,6 +248,9 @@ class CONTENT_EXPORT WebContentsImpl
   virtual content::WebUI* GetWebUIForCurrentState() OVERRIDE;
   virtual bool GotResponseToLockMouseRequest(bool allowed) OVERRIDE;
   virtual bool HasOpener() const OVERRIDE;
+  virtual bool ShouldIgnoreNavigation(const GURL& url,
+                                      const content::Referrer& referrer,
+                                      bool is_content_initiated) OVERRIDE;
   virtual void DidChooseColorInColorChooser(int color_chooser_id,
                                             SkColor color) OVERRIDE;
   virtual void DidEndColorChooser(int color_chooser_id) OVERRIDE;