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

chrome/browser/ui/cocoa/extensions/browser_action_button.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/extensions/browser_action_button.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/logging.h"
@@ skipping 50 matching lines @@
         this, chrome::NOTIFICATION_EXTENSION_BROWSER_ACTION_UPDATED,
         content::Source<ExtensionAction>(browser_action_));
   }
 
   ~ExtensionImageTrackerBridge() {}
 
   // ImageLoadingTracker::Observer implementation.
   void OnImageLoaded(const gfx::Image& image,
                      const std::string& extension_id,
                      int index) OVERRIDE {
-    browser_action_->CacheIcon(browser_action_->default_icon_path(), image);
+    browser_action_->CacheIcon(image);
     [owner_ updateState];
   }
 
   // Overridden from content::NotificationObserver.
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) {
     if (type == chrome::NOTIFICATION_EXTENSION_BROWSER_ACTION_UPDATED)
       [owner_ updateState];
     else
@@ skipping 239 matching lines @@
                operation:NSCompositeSourceOver
                 fraction:1.0
           respectFlipped:YES
                    hints:nil];
 
   cellFrame.origin.y += kBrowserActionBadgeOriginYOffset;
   [self drawBadgeWithinFrame:cellFrame];
 }
 
 @end