Remove support for page_action.icons, and the legacy code surrounding it.

chrome/browser/ui/gtk/browser_actions_toolbar_gtk.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include <algorithm>
 #include <vector>
@@ skipping 204 matching lines @@
      default:
       NOTREACHED();
       break;
     }
   }
 
   // ImageLoadingTracker::Observer implementation.
   void OnImageLoaded(const gfx::Image& image,
                      const std::string& extension_id,
                      int index) OVERRIDE {
-    extension_->browser_action()->CacheIcon(
-        extension_->browser_action()->default_icon_path(), image);
+    extension_->browser_action()->CacheIcon(image);
     UpdateState();
   }
 
   // Updates the button based on the latest state from the associated
   // browser action.
   void UpdateState() {
     int tab_id = toolbar_->GetCurrentTabId();
     if (tab_id < 0)
       return;
 
@@ skipping 857 matching lines @@
 
   menu->PopupAsContext(gfx::Point(event->x_root, event->y_root),
                        event->time);
   return TRUE;
 }
 
 void BrowserActionsToolbarGtk::OnButtonShowOrHide(GtkWidget* sender) {
   if (!resize_animation_.is_animating())
     UpdateChevronVisibility();
 }