Move CrTrackingArea from chrome/browser/ui/cocoa to ui/base/cocoa.

chrome/browser/ui/cocoa/toolbar/toolbar_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_TOOLBAR_TOOLBAR_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_TOOLBAR_TOOLBAR_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/public/pref_member.h"
 #import "chrome/browser/ui/cocoa/command_observer_bridge.h"
-#import "chrome/browser/ui/cocoa/tracking_area.h"
 #import "chrome/browser/ui/cocoa/url_drop_target.h"
 #import "chrome/browser/ui/cocoa/view_resizer.h"
+#import "ui/base/cocoa/tracking_area.h"
 
 @class AutocompleteTextField;
 @class AutocompleteTextFieldEditor;
 @class BackForwardMenuController;
 class Browser;
 @class BrowserActionsContainerView;
 @class BrowserActionsController;
 class CommandUpdater;
 class LocationBarViewMac;
 @class MenuButton;
@@ skipping 51 matching lines @@
   BooleanPrefMember showHomeButton_;
   BOOL hasToolbar_;  // If NO, we may have only the location bar.
   BOOL hasLocationBar_;  // If |hasToolbar_| is YES, this must also be YES.
   BOOL locationBarAtMinSize_; // If the location bar is at the minimum size.
 
   // We have an extra retain in the locationBar_.
   // See comments in awakeFromNib for more info.
   scoped_nsobject<AutocompleteTextField> locationBarRetainer_;
 
   // Tracking area for mouse enter/exit/moved in the toolbar.
-  ScopedCrTrackingArea trackingArea_;
+  ui::ScopedCrTrackingArea trackingArea_;
 
   // We retain/release the hover button since interaction with the
   // button may make it go away (e.g. delete menu option over a
   // bookmark button).  Thus this variable is not weak.  The
   // hoveredButton_ is required to have an NSCell that responds to
   // setMouseInside:animate:.
   NSButton* hoveredButton_;
 }
 
 // Initialize the toolbar and register for command updates. The profile is
@@ skipping 83 matching lines @@
 // Returns an array of views in the order of the outlets above.
 - (NSArray*)toolbarViews;
 - (void)showOptionalHomeButton;
 - (void)installWrenchMenu;
 - (WrenchMenuController*)wrenchMenuController;
 // Return a hover button for the current event.
 - (NSButton*)hoverButtonForEvent:(NSEvent*)theEvent;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TOOLBAR_TOOLBAR_CONTROLLER_H_