mac: Switch browser action backgrounds from vectors to bitmaps

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

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTION_BUTTON_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTION_BUTTON_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/memory/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
-#import "chrome/browser/ui/cocoa/gradient_button_cell.h"
+#import "chrome/browser/ui/cocoa/image_button_cell.h"
 
 class Browser;
 class ExtensionAction;
 class ExtensionImageTrackerBridge;
 
 namespace extensions {
 class Extension;
 }
 
 // Fired on each drag event while the user is moving the button.
@@ skipping 39 matching lines @@
 // Returns a pointer to an autoreleased NSImage with the badge, shadow and
 // cell image drawn into it.
 - (NSImage*)compositedImage;
 
 @property(readonly, nonatomic) BOOL isBeingDragged;
 @property(readonly, nonatomic) const extensions::Extension* extension;
 @property(readwrite, nonatomic) int tabId;
 
 @end
 
-@interface BrowserActionCell : GradientButtonCell {
+@interface BrowserActionCell : ImageButtonCell {
  @private
   // The current tab ID used when drawing the cell.
   int tabId_;
 
   // The action we're drawing the cell for. Weak.
   ExtensionAction* extensionAction_;
 }
 
 @property(readwrite, nonatomic) int tabId;
 @property(readwrite, nonatomic) ExtensionAction* extensionAction;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTION_BUTTON_H_