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

ui/views/widget/root_view.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 "ui/views/widget/root_view.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 480 matching lines @@
   }
   return false;
 }
 
 void RootView::OnMouseReleased(const ui::MouseEvent& event) {
   UpdateCursor(event);
 
   if (mouse_pressed_handler_) {
     ui::MouseEvent mouse_released(event, static_cast<View*>(this),
                                   mouse_pressed_handler_);
+    // TODO(sadrul|oshima): This is tentative solution to pass target
+    // to LauncherDelegate::ItemClicked. Remove this once crbug.com/173235
+    // is implemented.
+    ui::Event::DispatcherApi api(&mouse_released);
+    api.set_target(this);
+
     // We allow the view to delete us from ProcessMouseReleased. As such,
     // configure state such that we're done first, then call View.
     View* mouse_pressed_handler = mouse_pressed_handler_;
     SetMouseHandler(NULL);
     mouse_pressed_handler->ProcessMouseReleased(mouse_released);
     // WARNING: we may have been deleted.
   }
 }
 
 void RootView::OnMouseCaptureLost() {
@@ skipping 151 matching lines @@
 }
 
 void RootView::SetMouseLocationAndFlags(const ui::MouseEvent& event) {
   last_mouse_event_flags_ = event.flags();
   last_mouse_event_x_ = event.x();
   last_mouse_event_y_ = event.y();
 }
 
 }  // namespace internal
 }  // namespace views