[ash-md] Adjusts animation of the selector after closing an overview item

ash/common/wm/overview/window_selector.cc

 // Copyright 2013 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 "ash/common/wm/overview/window_selector.h"
 
 #include <algorithm>
 #include <functional>
 #include <set>
 #include <utility>
@@ skipping 458 matching lines @@
     if (it != window_list.end()) {
       // Record 1-based index so that selecting a top MRU window will record 1.
       UMA_HISTOGRAM_COUNTS_100("Ash.WindowSelector.SelectionDepth",
                                1 + it - window_list.begin());
     }
   }
 
   window->GetWindowState()->Activate();
 }
 
+void WindowSelector::SetSelectorOpacity(float opacity) {
+  grid_list_[selected_grid_index_]->SetSelectorOpacity(opacity);
+}
+
 bool WindowSelector::HandleKeyEvent(views::Textfield* sender,
                                     const ui::KeyEvent& key_event) {
   if (key_event.type() != ui::ET_KEY_PRESSED)
     return false;
 
   switch (key_event.key_code()) {
     case ui::VKEY_ESCAPE:
       CancelSelection();
       break;
     case ui::VKEY_UP:
@@ skipping 198 matching lines @@
   for (size_t i = 0; i <= grid_list_.size() &&
                      grid_list_[selected_grid_index_]->Move(direction, animate);
        i++) {
     selected_grid_index_ =
         (selected_grid_index_ + display_direction + grid_list_.size()) %
         grid_list_.size();
   }
 }
 
 }  // namespace ash