Fix several painting glitches for toolstrips.

chrome/browser/extensions/extension_view.h

 // Copyright (c) 2006-2009 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_EXTENSIONS_EXTENSION_VIEW_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_H_
 
 #include "chrome/browser/renderer_host/render_view_host_delegate.h"
 #include "chrome/browser/tab_contents/render_view_host_delegate_helper.h"
+#include "skia/include/SkBitmap.h"
 
 // TODO(port): Port these files.
 #if defined(OS_WIN)
 #include "chrome/browser/views/hwnd_html_view.h"
 #else
 #include "chrome/common/temp_scaffolding_stubs.h"
 #endif
 
 class Browser;
 class Extension;
 class RenderWidgetHost;
 class RenderWidgetHostView;
 class WebContents;
 struct WebPreferences;
 
 // This class is the browser component of an extension component's RenderView.
 // It handles setting up the renderer process, if needed, with special
 // priviliges available to extensions.  The view may be drawn to the screen or
 // hidden.
 class ExtensionView : public HWNDHtmlView,
                       public RenderViewHostDelegate,
                       public RenderViewHostDelegate::View {
  public:
+  // ExtensionView
   ExtensionView(Extension* extension,
                 const GURL& url,
                 SiteInstance* instance,
                 Browser* browser);
 
+  Extension* extension() { return extension_; }
+
   // HWNDHtmlView
   virtual void CreatingRenderer();
 
+  virtual void SetBackground(const SkBitmap& background);
+
   // RenderViewHostDelegate
   // TODO(mpcomplete): GetProfile is unused.
   virtual Profile* GetProfile() const { return NULL; }
   virtual void RenderViewCreated(RenderViewHost* render_view_host);
   virtual void DidContentsPreferredWidthChange(const int pref_width);
   virtual void DidStopLoading(RenderViewHost* render_view_host,
       int32 page_id);
   virtual WebPreferences GetWebkitPrefs();
   virtual void RunJavaScriptMessage(
       const std::wstring& message,
@@ skipping 15 matching lines @@
                                  const gfx::Rect& initial_pos,
                                  bool user_gesture);
   virtual void ShowCreatedWidget(int route_id,
                                  const gfx::Rect& initial_pos);
   virtual void ShowContextMenu(const ContextMenuParams& params);
   virtual void StartDragging(const WebDropData& drop_data);
   virtual void UpdateDragCursor(bool is_drop_target);
   virtual void TakeFocus(bool reverse);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
 
-  Extension* extension() { return extension_; }
  private:
+  // We wait to show the ExtensionView until several things have loaded.
+  void ShowIfCompletelyLoaded();
+
   // The extension that we're hosting in this view.
   Extension* extension_;
 
   // The browser window that this view is in.
   Browser* browser_;
 
   // Common implementations of some RenderViewHostDelegate::View methods.
   RenderViewHostDelegateViewHelper delegate_view_helper_;
 
+  // Whether the RenderWidget has reported that it has stopped loading.
+  bool did_stop_loading_;
+
+  // What we should set the preferred width to once the ExtensionView has
+  // loaded.
+  int pending_preferred_width_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionView);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_H_