Rename ash desktop_background to wallpaper.

ash/common/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/common/wm/overview/window_grid.h"
 
 #include <algorithm>
 #include <functional>
 #include <set>
 #include <utility>
@@ skipping 334 matching lines @@
                                       SkColor border_color,
                                       float initial_opacity) {
   views::Widget* widget = new views::Widget;
   views::Widget::InitParams params;
   params.type = views::Widget::InitParams::TYPE_POPUP;
   params.keep_on_top = false;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.accept_events = false;
   widget->set_focus_on_creation(false);
-  // Parenting in kShellWindowId_DesktopBackgroundContainer allows proper
-  // layering of the shield and selection widgets. Since that container is
-  // created with USE_LOCAL_COORDINATES BoundsInScreenBehavior local bounds in
-  // |root_window_| need to be provided.
+  // Parenting in kShellWindowId_WallpaperContainer allows proper layering of
+  // the shield and selection widgets. Since that container is created with
+  // USE_LOCAL_COORDINATES BoundsInScreenBehavior local bounds in |root_window_|
+  // need to be provided.
   root_window->GetRootWindowController()->ConfigureWidgetInitParamsForContainer(
-      widget, kShellWindowId_DesktopBackgroundContainer, &params);
+      widget, kShellWindowId_WallpaperContainer, &params);
   widget->Init(params);
   WmWindow* widget_window = WmLookup::Get()->GetWindowForWidget(widget);
   // Disable the "bounce in" animation when showing the window.
   widget_window->SetVisibilityAnimationTransition(::wm::ANIMATE_NONE);
   // The background widget should not activate the shelf when passing under it.
   widget_window->GetWindowState()->set_ignored_by_shelf(true);
 
   views::View* content_view =
       new RoundedRectView(border_radius, SK_ColorTRANSPARENT);
   if (ash::MaterialDesignController::IsOverviewMaterial()) {
@@ skipping 682 matching lines @@
         *min_right = left;
       if (*max_right < left)
         *max_right = left;
     }
     *max_bottom = top + height;
   }
   return windows_fit;
 }
 
 }  // namespace ash