Makes it so the launcher only gets focus when using the keyboard.

ash/shell.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/shell.h"
 
 #include <algorithm>
 
 #include "ash/app_list/app_list.h"
 #include "ash/ash_switches.h"
@@ skipping 327 matching lines @@
     SetupCompactWindowMode();
   else
     SetupNonCompactWindowMode();
 
   if (!command_line->HasSwitch(switches::kAuraNoShadows))
     shadow_controller_.reset(new internal::ShadowController());
 
   focus_cycler_.reset(new internal::FocusCycler());
   focus_cycler_->AddWidget(status_widget_);
   focus_cycler_->AddWidget(launcher_->widget());
+  launcher_->SetFocusCycler(focus_cycler_.get());
 
   // Force a layout.
   root_window->layout_manager()->OnWindowResized();
 
   window_modality_controller_.reset(new internal::WindowModalityController);
   AddRootWindowEventFilter(window_modality_controller_.get());
 
   visibility_controller_.reset(new internal::VisibilityController);
   aura::client::SetVisibilityClient(visibility_controller_.get());
 
@@ skipping 239 matching lines @@
   // Create the desktop background image.
   root_window_layout_->SetBackgroundWidget(internal::CreateDesktopBackground());
   root_window_layout_->SetBackgroundLayer(NULL);
 }
 
 void Shell::ResetLayoutManager(int container_id) {
   GetContainer(container_id)->SetLayoutManager(NULL);
 }
 
 }  // namespace ash