[Mac] Prep for animating the Browser Action Buttons in and out....

chrome/browser/cocoa/extensions/browser_actions_controller.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_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_
 #define CHROME_BROWSER_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/scoped_nsobject.h"
@@ skipping 13 matching lines @@
 // The padding between browser action buttons.
 extern const CGFloat kBrowserActionButtonPadding;
 
 // Sent when the visibility of the Browser Actions changes.
 extern const NSString* kBrowserActionVisibilityChangedNotification;
 
 // Handles state and provides an interface for controlling the Browser Actions
 // container within the Toolbar.
 @interface BrowserActionsController : NSObject {
  @private
+  // Whether the container has already done initial setup and layout of the
+  // buttons.
+  BOOL isInitialized_;
+
   // Reference to the current browser. Weak.
   Browser* browser_;
 
   // The view from Toolbar.xib we'll be rendering our browser actions in. Weak.
   BrowserActionsContainerView* containerView_;
 
   // The current profile. Weak.
   Profile* profile_;
 
   // The model that tracks the order of the toolbar icons. Weak.
@@ skipping 66 matching lines @@
 // Registers the user preferences used by this class.
 + (void)registerUserPrefs:(PrefService*)prefs;
 
 @end  // @interface BrowserActionsController
 
 @interface BrowserActionsController(TestingAPI)
 - (NSButton*)buttonWithIndex:(NSUInteger)index;
 @end
 
 #endif  // CHROME_BROWSER_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_