Adds popups to browser actions, completing the feature....

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 32567)
+++ chrome/browser/cocoa/extensions/browser_actions_controller.h	(working copy)
@@ -13,6 +13,7 @@
 class Browser;
 @class BrowserActionButton;
 class Extension;
+@class ExtensionPopupController;
 class ExtensionsServiceObserverBridge;
 class Profile;
 
@@ -42,6 +43,9 @@
 
   // The order of the BrowserActionButton objects within the dictionary.
   scoped_nsobject<NSMutableArray> buttonOrder_;
+
+  // The controller for the popup displayed if a browser action has one. Weak.
+  ExtensionPopupController* popupController_;
 }
 
 // Initializes the controller given the current browser and container view that
@@ -56,6 +60,10 @@
 // Hides the browser action's popup menu (if one is present and visible).
 - (void)hidePopup;
 
+// Returns the controller used to display the popup being shown. If no popup is
+// currently open, then nil is returned.
+- (ExtensionPopupController*)popup;
+
 // Marks the container view for redraw. Called by the extension service
 // notification bridge.
 - (void)browserActionVisibilityHasChanged;