Convert native mouse locations to the locations in screen coordinate in RootWindowHostLinux.

ui/aura/root_window.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/aura/root_window.h"
 
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 1018 matching lines @@
     case ui::ET_MOUSE_RELEASED:
       mouse_pressed_handler_ = NULL;
       mouse_button_flags_ = event->flags() & kMouseButtonFlagMask &
           ~event->changed_button_flags();
       Env::GetInstance()->set_mouse_button_flags(mouse_button_flags_);
       break;
     default:
       break;
   }
   if (target) {
-    int flags = event->flags();
-    gfx::Point location_in_window = event->location();
-    Window::ConvertPointToTarget(this, target, &location_in_window);
-    if (IsNonClientLocation(target, location_in_window))
-      flags |= ui::EF_IS_NON_CLIENT;
-    event->set_flags(flags);
     event->ConvertLocationToTarget(static_cast<Window*>(this), target);
+    if (IsNonClientLocation(target, event->location()))
+      event->set_flags(event->flags() | ui::EF_IS_NON_CLIENT);
     return ProcessMouseEvent(target, event);
   }
   return false;
 }
 
 void RootWindow::DispatchHeldMouseMove() {
   if (held_mouse_move_.get()) {
     // If a mouse move has been synthesized, the target location is suspect,
     // so drop the held event.
     if (!synthesize_mouse_move_)
@@ skipping 39 matching lines @@
 void RootWindow::UnlockCompositor() {
   DCHECK(compositor_lock_);
   compositor_lock_ = NULL;
   if (draw_on_compositor_unlock_) {
     draw_on_compositor_unlock_ = false;
     ScheduleDraw();
   }
 }
 
 }  // namespace aura