Added ignored_by_shelf bit to overview mode selection widget.

ash/wm/overview/window_grid.cc

 // Copyright 2014 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/wm/overview/window_grid.h"
 
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/overview/scoped_transform_overview_window.h"
@@ skipping 340 matching lines @@
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.parent = Shell::GetContainer(root_window_,
                                       kShellWindowId_DefaultContainer);
   params.accept_events = false;
   selection_widget_->set_focus_on_creation(false);
   selection_widget_->Init(params);
   // Disable the "bounce in" animation when showing the window.
   ::wm::SetWindowVisibilityAnimationTransition(
       selection_widget_->GetNativeWindow(), ::wm::ANIMATE_NONE);
+  // The selection widget should not activate the shelf when passing under it.
+  ash::wm::GetWindowState(selection_widget_->GetNativeWindow())->
+      set_ignored_by_shelf(true);
+
   views::View* content_view = new views::View;
   content_view->set_background(
       views::Background::CreateSolidBackground(kWindowOverviewSelectionColor));
   selection_widget_->SetContentsView(content_view);
   selection_widget_->GetNativeWindow()->parent()->StackChildAtBottom(
       selection_widget_->GetNativeWindow());
   selection_widget_->Show();
   // New selection widget starts with 0 opacity and then fades in.
   selection_widget_->GetNativeWindow()->layer()->SetOpacity(0);
 
@@ skipping 59 matching lines @@
         ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
     selection_widget_->SetBounds(SelectedWindow()->target_bounds());
     selection_widget_->SetOpacity(kWindowOverviewSelectorOpacity);
     return;
   }
   selection_widget_->SetBounds(SelectedWindow()->target_bounds());
   selection_widget_->SetOpacity(kWindowOverviewSelectorOpacity);
 }
 
 }  // namespace ash