Add Wallpaper option to launcher context menu

ash/launcher/launcher.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 "ash/launcher/launcher.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "ash/focus_cycler.h"
@@ skipping 325 matching lines @@
 }
 
 void Launcher::RemoveIconObserver(LauncherIconObserver* observer) {
   launcher_view_->RemoveIconObserver(observer);
 }
 
 bool Launcher::IsShowingMenu() const {
   return launcher_view_->IsShowingMenu();
 }
 
+void Launcher::ShowContextMenu(const gfx::Point& location) {
+  launcher_view_->ShowContextMenu(location, false);
+}
+
 bool Launcher::IsShowingOverflowBubble() const {
   return launcher_view_->IsShowingOverflowBubble();
 }
 
 void Launcher::SetVisible(bool visible) const {
   delegate_view_->SetVisible(visible);
 }
 
 views::View* Launcher::GetAppListButtonView() const {
   return launcher_view_->GetAppListButtonView();
 }
 
 void Launcher::SetWidgetBounds(const gfx::Rect bounds) {
   widget_->SetBounds(bounds);
   if (dimmer_.get())
     dimmer_->SetBounds(bounds);
 }
 
 internal::LauncherView* Launcher::GetLauncherViewForTest() {
   return launcher_view_;
 }
 
 }  // namespace ash