Implement a ResourceThrottle for URL overriding in Chrome on Android.

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index a3e070bb86eca1205d02b5c8e6a095ac1c012a3c..aa5637f5ad8d5c845f5892b67dbb4b6c0d473797 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -38,6 +38,7 @@ class WebIntentsDispatcher;
 struct ContextMenuParams;
 struct FileChooserParams;
 struct NativeWebKeyboardEvent;
+struct Referrer;
 struct SSLStatus;
 }
 
@@ -77,6 +78,14 @@ class CONTENT_EXPORT WebContentsDelegate {
   virtual WebContents* OpenURLFromTab(WebContents* source,
                                       const OpenURLParams& params);
 
+  // Called for top-level navigation to decide whether the navigation should be
+  // allowed to proceed.
+  virtual bool ShouldIgnoreNavigation(
+      WebContents* source,

[darin (slow to review), 2012/06/01 20:57:41]

It seems like this function is no longer necessary as src/content/ doesn't call
it.

[mkosiba (inactive), 2012/06/06 16:11:20]

For Chrome on Android it makes sense for the callback to be on the
WebContentsDelegate. Let me move the throttle to src/content/ ...

+      const GURL& validated_url,
+      const content::Referrer& referrer,
+      bool is_content_initiated);
+
   // Called to inform the delegate that the WebContents's navigation state
   // changed. The |changed_flags| indicates the parts of the navigation state
   // that have been updated, and is any combination of the