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

chrome/browser/ui/ash/launcher/app_shortcut_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/app_shortcut_launcher_item_controller.h"
 
 #include "ash/wm/window_util.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item_tab.h"
@@ skipping 76 matching lines @@
     Browser* browser = chrome::FindBrowserWithWebContents(content[i]);
     if (!browser)
       continue;
     TabStripModel* tab_strip = browser->tab_strip_model();
     int index = tab_strip->GetIndexOfWebContents(content[i]);
     DCHECK(index != TabStripModel::kNoTab);
     tab_strip->CloseWebContentsAt(index, TabStripModel::CLOSE_NONE);
   }
 }
 
-void AppShortcutLauncherItemController::Clicked() {
+void AppShortcutLauncherItemController::Clicked(const ui::Event& event) {
   Activate();
 }
 
 void AppShortcutLauncherItemController::OnRemoved() {
   // AppShortcutLauncherItemController is unowned; delete on removal.
   delete this;
 }
 
 void AppShortcutLauncherItemController::LauncherItemChanged(
     int model_index,
@@ skipping 56 matching lines @@
            refocus_pattern.MatchesURL(tab_url)) ||
           (extension->OverlapsWithOrigin(tab_url) &&
            extension->web_extent().MatchesURL(tab_url)) ||
           launcher_controller()->GetPerAppInterface()->
              IsWebContentHandledByApplication(web_contents, app_id()))
         items.push_back(web_contents);
     }
   }
   return items;
 }