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

chrome/browser/ui/ash/launcher/browser_launcher_item_controller.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/browser_launcher_item_controller.h"
 
 #include "ash/launcher/launcher.h"
 #include "ash/launcher/launcher_model.h"
 #include "ash/shell.h"
 #include "ash/wm/window_util.h"
@@ skipping 127 matching lines @@
   window_->Show();
   ash::wm::ActivateWindow(window_);
 }
 
 void BrowserLauncherItemController::Close() {
   views::Widget* widget = views::Widget::GetWidgetForNativeView(window_);
   if (widget)
     widget->Close();
 }
 
-void BrowserLauncherItemController::Clicked() {
+void BrowserLauncherItemController::Clicked(const ui::Event& event) {
   views::Widget* widget =
       views::Widget::GetWidgetForNativeView(window_);
   if (widget && widget->IsActive()) {
     widget->Minimize();
   } else {
     Activate();
   }
 }
 
 void BrowserLauncherItemController::OnRemoved() {
@@ skipping 160 matching lines @@
       app_state = ChromeLauncherController::APP_STATE_ACTIVE;
   } else {
     app_state = ChromeLauncherController::APP_STATE_INACTIVE;
   }
   launcher_controller()->UpdateAppState(tab, app_state);
 }
 
 ash::LauncherModel* BrowserLauncherItemController::launcher_model() {
   return launcher_controller()->model();
 }