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

chrome/browser/cocoa/infobar_controller.h

Index: chrome/browser/cocoa/infobar_controller.h
===================================================================
--- chrome/browser/cocoa/infobar_controller.h	(revision 30850)
+++ chrome/browser/cocoa/infobar_controller.h	(working copy)
@@ -4,7 +4,8 @@
 
 #import <Cocoa/Cocoa.h>
 
-@class InfoBarContainerController;
+@class AnimatableView;
+@protocol InfoBarContainer;
 class InfoBarDelegate;
 
 // A controller for an infobar in the browser window.  There is one
@@ -13,10 +14,12 @@
 // 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_;
@@ -35,12 +38,23 @@
 // 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