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

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.h"
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/mac_logging.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.h"
 #import "chrome/browser/ui/cocoa/location_bar/button_decoration.h"
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_decoration.h"
 #import "chrome/browser/ui/cocoa/nsview_additions.h"
-#import "chrome/browser/ui/cocoa/tracking_area.h"
 #import "chrome/common/extensions/feature_switch.h"
 #import "third_party/mozilla/NSPasteboard+Utils.h"
+#import "ui/base/cocoa/tracking_area.h"
 
 using extensions::FeatureSwitch;
 
 namespace {
 
 const CGFloat kBaselineAdjust = 3.0;
 
 // Matches the clipping radius of |GradientButtonCell|.
 const CGFloat kCornerRadius = 3.0;
 
@@ skipping 753 matching lines @@
 
 - (BOOL)showsFirstResponder {
   return [super showsFirstResponder] && !hideFocusState_;
 }
 
 - (CGFloat)textWidth {
   return [[self attributedStringValue] size].width;
 }
 
 @end