[PermissionBubble] Remove bubble from previous manager.

chrome/browser/ui/cocoa/browser_window_controller.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 
 // A class acting as the Objective-C controller for the Browser
 // object. Handles interactions between Cocoa and the cross-platform
 // code. Each window has a single toolbar and, by virtue of being a
@@ skipping 235 matching lines @@
 
 // Resets the toolbar's tab state for |tab|.
 - (void)resetTabState:(content::WebContents*)tab;
 
 // Sets whether or not the current page in the frontmost tab is bookmarked.
 - (void)setStarredState:(BOOL)isStarred;
 
 // Sets whether or not the current page is translated.
 - (void)setCurrentPageIsTranslated:(BOOL)on;
 
+// Invoked via BrowserWindowCocoa::OnActiveTabChanged, happens whenever a
+// new tab becomes active.
+- (void)onActiveTabChanged:(content::WebContents*)oldContents
+                        to:(content::WebContents*)newContents;
+
 // Happens when the zoom level is changed in the active tab, the active tab is
 // changed, or a new browser window or tab is created. |canShowBubble| denotes
 // whether it would be appropriate to show a zoom bubble or not.
 - (void)zoomChangedForActiveTab:(BOOL)canShowBubble;
 
 // Return the rect, in WebKit coordinates (flipped), of the window's grow box
 // in the coordinate system of the content area of the currently selected tab.
 - (NSRect)selectedTabGrowBoxRect;
 
 // Called to tell the selected tab to update its loading state.
@@ skipping 334 matching lines @@
 - (ExclusiveAccessBubbleWindowController*)exclusiveAccessBubbleWindowController;
 
 // Gets the rect, in window base coordinates, that the omnibox popup should be
 // positioned relative to.
 - (NSRect)omniboxPopupAnchorRect;
 
 @end  // @interface BrowserWindowController (TestingAPI)
 
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_