Move the panel to the root window where the mouse click occurred.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_browser.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 "chrome/browser/ui/ash/launcher/chrome_launcher_controller_per_browser.h"
 
 #include <vector>
 
 #include "ash/launcher/launcher_model.h"
 #include "ash/shell.h"
@@ skipping 84 matching lines @@
   }
 
   virtual void Activate() OVERRIDE {
     launcher_controller()->ActivateApp(app_id(), ui::EF_NONE);
   }
 
   virtual void Close() OVERRIDE {
     // TODO: maybe should treat as unpin?
   }
 
-  virtual void Clicked() OVERRIDE {
+  virtual void Clicked(const ui::Event& event) OVERRIDE {
     Activate();
   }
 
   virtual void OnRemoved() OVERRIDE {
     // AppShortcutLauncherItemController is unowned; delete on removal.
     delete this;
   }
 
   virtual void LauncherItemChanged(
       int model_index,
@@ skipping 687 matching lines @@
     return;
   }
 
   aura::Window* window = last_browser->window()->GetNativeWindow();
   window->Show();
   ash::wm::ActivateWindow(window);
 }
 
 void ChromeLauncherControllerPerBrowser::ItemClicked(
     const ash::LauncherItem& item,
-    int event_flags) {
+    const ui::Event& event) {
   DCHECK(HasItemController(item.id));
-  id_to_item_controller_map_[item.id]->Clicked();
+  id_to_item_controller_map_[item.id]->Clicked(event);
 }
 
 int ChromeLauncherControllerPerBrowser::GetBrowserShortcutResourceId() {
   return IDR_PRODUCT_LOGO_32;
 }
 
 string16 ChromeLauncherControllerPerBrowser::GetTitle(
     const ash::LauncherItem& item) {
   DCHECK(HasItemController(item.id));
   return id_to_item_controller_map_[item.id]->GetTitle();
@@ skipping 436 matching lines @@
 void ChromeLauncherControllerPerBrowser::SetAppIconLoaderForTest(
     ash::AppIconLoader* loader) {
   app_icon_loader_.reset(loader);
 }
 
 const std::string&
 ChromeLauncherControllerPerBrowser::GetAppIdFromLauncherIdForTest(
     ash::LauncherID id) {
   return id_to_item_controller_map_[id]->app_id();
 }