Synchronously update the loading state when a load starts so that the UI will...

chrome/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 180 matching lines @@
   virtual void UpdateThumbnail(const GURL& url,
                                const SkBitmap& bitmap,
                                const ThumbnailScore& score) { }
 
   // The page is trying to close the RenderView's representation in the client.
   virtual void Close(RenderViewHost* render_view_host) { }
 
   // The page is trying to move the RenderView's representation in the client.
   virtual void RequestMove(const gfx::Rect& new_bounds) { }
 
-  // The RenderView began loading a new page.
-  virtual void DidStartLoading(RenderViewHost* render_view_host,
-                               int32 page_id) { }
+  // The RenderView began loading a new page. This corresponds to WebKit's
+  // notion of the throbber starting.
+  virtual void DidStartLoading(RenderViewHost* render_view_host) { }
 
-  // The RenderView stopped loading a page.
-  virtual void DidStopLoading(RenderViewHost* render_view_host,
-                              int32 page_id) { }
+  // The RenderView stopped loading a page. This corresponds to WebKit's
+  // notion of the throbber stopping.
+  virtual void DidStopLoading(RenderViewHost* render_view_host) { }
 
   // The RenderView is starting a provisional load.
   virtual void DidStartProvisionalLoadForFrame(RenderViewHost* render_view_host,
                                                bool is_main_frame,
                                                const GURL& url) { }
 
   // Sent when a provisional load is redirected.
   virtual void DidRedirectProvisionalLoad(int32 page_id,
                                           const GURL& source_url,
                                           const GURL& target_url) { }
@@ skipping 203 matching lines @@
 
   // A find operation in the current page completed.
   virtual void OnFindReply(int request_id,
                            int number_of_matches,
                            const gfx::Rect& selection_rect,
                            int active_match_ordinal,
                            bool final_update) { }
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_