Eliminate all UI thread decoding of extension images....

chrome/browser/views/location_bar_view.h

 // Copyright (c) 2010 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_VIEWS_LOCATION_BAR_VIEW_H_
 #define CHROME_BROWSER_VIEWS_LOCATION_BAR_VIEW_H_
 
 #include <string>
 #include <map>
 #include <vector>
@@ skipping 421 matching lines @@
 
     // Overridden from view.
     virtual void OnMouseMoved(const views::MouseEvent& event);
     virtual bool OnMousePressed(const views::MouseEvent& event);
     virtual void OnMouseReleased(const views::MouseEvent& event, bool canceled);
 
     // Overridden from LocationBarImageView.
     virtual void ShowInfoBubble();
 
     // Overridden from ImageLoadingTracker.
-    virtual void OnImageLoaded(SkBitmap* image, size_t index);
+    virtual void OnImageLoaded(
+        SkBitmap* image, ExtensionResource resource, int index);
 
     // Overridden from ExtensionContextMenuModelModel::Delegate
     virtual void InspectPopup(ExtensionAction* action);
 
-    // Overriden from ExtensionPopup::Observer
+    // Overridden from ExtensionPopup::Observer
     virtual void ExtensionPopupClosed(ExtensionPopup* popup);
 
     // Called to notify the PageAction that it should determine whether to be
     // visible or hidden. |contents| is the TabContents that is active, |url|
     // is the current page URL.
     void UpdateVisibility(TabContents* contents, const GURL& url);
 
     // Either notify listeners or show a popup depending on the page action.
     void ExecuteAction(int button, bool inspect_with_devtools);
 
@@ skipping 14 matching lines @@
     // A cache of bitmaps the page actions might need to show, mapped by path.
     typedef std::map<std::string, SkBitmap> PageActionMap;
     PageActionMap page_action_icons_;
 
     // The context menu for this page action.
     scoped_ptr<ExtensionContextMenuModel> context_menu_contents_;
     scoped_ptr<views::Menu2> context_menu_menu_;
 
     // The object that is waiting for the image loading to complete
     // asynchronously.
-    ImageLoadingTracker* tracker_;
+    ImageLoadingTracker tracker_;
 
     // The tab id we are currently showing the icon for.
     int current_tab_id_;
 
     // The URL we are currently showing the icon for.
     GURL current_url_;
 
     // The string to show for a tooltip;
     std::string tooltip_;
 
@@ skipping 155 matching lines @@
   // The positioner that places the omnibox and info bubbles.
   const BubblePositioner* bubble_positioner_;
 
   // Storage of string needed for accessibility.
   std::wstring accessible_name_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarView);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_LOCATION_BAR_VIEW_H_