[Mac] Enables animations for the infobar....

chrome/browser/cocoa/infobar_controller.h

 // Copyright (c) 2009 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 <Cocoa/Cocoa.h>
 
-@class InfoBarContainerController;
+@class AnimatableView;
+@protocol InfoBarContainer;
 class InfoBarDelegate;
 
 // A controller for an infobar in the browser window.  There is one
 // controller per infobar view.  The base InfoBarController is able to
 // draw an icon, a text message, and a close button.  Subclasses can
 // override addAdditionalControls to customize the UI.
 @interface InfoBarController : NSViewController {
  @private
-  InfoBarContainerController* containerController_;  // weak, owns us
+  id<InfoBarContainer> containerController_;  // weak, owns us
+  BOOL infoBarClosing_;
 
  @protected
   InfoBarDelegate* delegate_;  // weak
+  IBOutlet NSView* infoBarView_;
   IBOutlet NSImageView* image_;
   IBOutlet NSTextField* label_;
   IBOutlet NSButton* okButton_;
   IBOutlet NSButton* cancelButton_;
 };
 
 // Initializes a new InfoBarController.
 - (id)initWithDelegate:(InfoBarDelegate*)delegate;
 
 // Called when someone clicks on the ok or cancel buttons.  Subclasses
 // must override if they do not hide the buttons.
 - (void)ok:(id)sender;
 - (void)cancel:(id)sender;
 
 // Called when someone clicks on the close button.  Dismisses the
 // infobar without taking any action.
 - (IBAction)dismiss:(id)sender;
 
+// Returns a pointer to this controller's view, cast as an AnimatableView.
+- (AnimatableView*)animatableView;
+
+// Open or animate open the infobar.
+- (void)open;
+- (void)animateOpen;
+
+// Close or animate close the infobar.
+- (void)close;
+- (void)animateClosed;
+
 // Subclasses can override this method to add additional controls to
 // the infobar view.  This method is called by awakeFromNib.  The
 // default implementation does nothing.
 - (void)addAdditionalControls;
 
-@property(assign, nonatomic) InfoBarContainerController* containerController;
+@property(assign, nonatomic) id<InfoBarContainer> containerController;
 @property(readonly) InfoBarDelegate* delegate;
 
 @end
 
 /////////////////////////////////////////////////////////////////////////
 // InfoBarController subclasses, one for each InfoBarDelegate
 // subclass.  Each of these subclasses overrides addAdditionalControls to
 // configure its view as necessary.
 
 @interface AlertInfoBarController : InfoBarController
 @end
 
 
 @interface LinkInfoBarController : InfoBarController
 // Called when there is a click on the link in the infobar.
 - (void)linkClicked;
 @end
 
 
 @interface ConfirmInfoBarController : InfoBarController
 // Called when the ok and cancel buttons are clicked.
 - (IBAction)ok:(id)sender;
 - (IBAction)cancel:(id)sender;
 @end