[PermissionBubble] Handle ownership management x-platform.

chrome/browser/ui/cocoa/browser_window_controller.h

Index: chrome/browser/ui/cocoa/browser_window_controller.h
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.h b/chrome/browser/ui/cocoa/browser_window_controller.h
index 1597b0f3fc3106a4c1c63734bd5a0ba68b9f1c41..491172056ca1cb871a3996dac1ecd0853c061b23 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller.h
@@ -42,7 +42,6 @@ class ExtensionKeybindingRegistryCocoa;
 @class InfoBarContainerController;
 class LocationBarViewMac;
 @class OverlayableContentsController;
-class PermissionBubbleCocoa;
 @class PresentationModeController;
 class StatusBubbleMac;
 @class TabStripController;
@@ -129,9 +128,6 @@ class Command;
   // Fullscreen API is not being used (or not available, before OS 10.7).
   base::scoped_nsobject<NSWindow> fullscreenWindow_;
 
-  // The Cocoa implementation of the PermissionBubbleView.
-  scoped_ptr<PermissionBubbleCocoa> permissionBubbleCocoa_;
-
   // True between |-windowWillEnterFullScreen:| and |-windowDidEnterFullScreen:|
   // to indicate that the window is in the process of transitioning into
   // AppKit fullscreen mode.