Remove the is_loading_ field from WebContentsImpl

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index b457a076e55120811cd6f0c7b214af7d5c936e3a..29ae557c26deea8e7c964b960a1fd21110289361 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -523,6 +523,10 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // Returns the Mojo ImageDownloader service.
   const image_downloader::ImageDownloaderPtr& GetMojoImageDownloader();
 
+  // Resets the loading state. Following this call, the RenderFrameHost will be
+  // in a non-loading state.
+  void ResetLoadingState();
+
  protected:
   friend class RenderFrameHostFactory;
 
@@ -568,7 +572,6 @@ class CONTENT_EXPORT RenderFrameHostImpl
       const base::string16& error_description,
       bool was_ignored_by_handler);
   void OnDidCommitProvisionalLoad(const IPC::Message& msg);
-  void OnDidDropNavigation();
   void OnUpdateState(const PageState& state);
   void OnBeforeUnloadACK(
       bool proceed,