Fix the loading progress bar for Android.

content/browser/android/web_contents_observer_android.h

Index: content/browser/android/web_contents_observer_android.h
diff --git a/content/browser/android/web_contents_observer_android.h b/content/browser/android/web_contents_observer_android.h
index c9349dceab3b89909426700d5c60781e7e1878bf..ee988adf9f00bd942afa11c9e7cee1c3ea652294 100644
--- a/content/browser/android/web_contents_observer_android.h
+++ b/content/browser/android/web_contents_observer_android.h
@@ -49,6 +49,14 @@ class WebContentsObserverAndroid : public WebContentsObserver {
                                     const FrameNavigateParams& params) OVERRIDE;
   virtual void DidNavigateAnyFrame(const LoadCommittedDetails& details,
                                    const FrameNavigateParams& params) OVERRIDE;
+  virtual void DidStartProvisionalLoadForFrame(
+      int64 frame_id,
+      int64 parent_frame_id,
+      bool is_main_frame,
+      const GURL& validated_url,
+      bool is_error_page,
+      bool is_iframe_srcdoc,
+      RenderViewHost* render_view_host) OVERRIDE;
   virtual void WebContentsDestroyed(WebContents* web_contents) OVERRIDE;
 
   void DidFailLoadInternal(bool is_provisional_load,