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

chrome/browser/cocoa/extensions/browser_actions_controller.h

Index: chrome/browser/cocoa/extensions/browser_actions_controller.h
===================================================================
--- chrome/browser/cocoa/extensions/browser_actions_controller.h	(revision 43254)
+++ chrome/browser/cocoa/extensions/browser_actions_controller.h	(working copy)
@@ -31,6 +31,10 @@
 // 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_;