Move icon fallbacks into ExtensionAction.

chrome/browser/ui/views/browser_action_view.h

Index: chrome/browser/ui/views/browser_action_view.h
diff --git a/chrome/browser/ui/views/browser_action_view.h b/chrome/browser/ui/views/browser_action_view.h
index a2ab30fe347f7bd16e5fa622ddff6e94b21115a3..316ab876c47e8780502cf441b7d24faadd88c905 100644
--- a/chrome/browser/ui/views/browser_action_view.h
+++ b/chrome/browser/ui/views/browser_action_view.h
@@ -45,9 +45,6 @@ class BrowserActionButton : public views::MenuButton,
   // Called to update the display to match the browser action's state.
   void UpdateState();
 
-  // Returns the default icon, if any.
-  const SkBitmap& default_icon() const { return default_icon_; }
-
   // Does this button's action have a popup?
   virtual bool IsPopup();
   virtual GURL GetPopupUrl();
@@ -125,10 +122,6 @@ class BrowserActionButton : public views::MenuButton,
   // asynchronously.
   ImageLoadingTracker tracker_;
 
-  // The default icon for our browser action. This might be non-empty if the
-  // browser action had a value for default_icon in the manifest.
-  SkBitmap default_icon_;
-
   // The browser action shelf.
   BrowserActionsContainer* panel_;