views: Extract Widget observer into its own header file.

chrome/browser/ui/views/location_bar/location_bar_view.cc

 // 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.
 
 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
 
 #include <algorithm>
 #include <map>
 
 #include "base/stl_util.h"
@@ skipping 57 matching lines @@
 #include "ui/base/layout.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/theme_provider.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/views/border.h"
 #include "ui/views/button_drag_utils.h"
 #include "ui/views/controls/label.h"
+#include "ui/views/widget/widget.h"
 
 #if defined(OS_WIN)
 #include "base/win/metro.h"
 #endif
 
 #if defined(OS_WIN) && !defined(USE_AURA)
 #include "chrome/browser/ui/views/omnibox/omnibox_view_win.h"
 #endif
 
 #if !defined(OS_CHROMEOS)
@@ skipping 1437 matching lines @@
 }
 
 void LocationBarView::CleanupFadeAnimation() {
   // Since we're no longer animating we don't need our layer.
   SetPaintToLayer(false);
   // Bubble labels don't need a transparent background anymore.
   ev_bubble_view_->SetLabelBackgroundColor(SK_ColorWHITE);
   selected_keyword_view_->SetLabelBackgroundColor(SK_ColorWHITE);
 }
 #endif  // USE_AURA