desktop linux aura: Fix event/capture focus after dragging a window.

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 906 matching lines @@
   }
 
   // Get the list of GestureEvents from GestureRecognizer.
   scoped_ptr<ui::GestureRecognizer::Gestures> gestures;
   gestures.reset(gesture_recognizer_->ProcessTouchEventForGesture(
       *event, result, target));
 
   return ProcessGestures(gestures.get()) ? true : handled;
 }
 
-void RootWindow::OnHostLostCapture() {
+void RootWindow::OnHostLostWindowCapture() {
   Window* capture_window = client::GetCaptureWindow(this);
   if (capture_window && capture_window->GetRootWindow() == this)
     capture_window->ReleaseCapture();
 }
 
+void RootWindow::OnHostLostMouseGrab() {
+  mouse_pressed_handler_ = NULL;
+  mouse_moved_handler_ = NULL;
+  mouse_event_dispatch_target_ = NULL;
+}
+
 void RootWindow::OnHostPaint() {
   Draw();
 }
 
 void RootWindow::OnHostMoved(const gfx::Point& origin) {
   FOR_EACH_OBSERVER(RootWindowObserver, observers_,
                     OnRootWindowMoved(this, origin));
 }
 
 void RootWindow::OnHostResized(const gfx::Size& size) {
@@ skipping 122 matching lines @@
 void RootWindow::UnlockCompositor() {
   DCHECK(compositor_lock_);
   compositor_lock_ = NULL;
   if (draw_on_compositor_unlock_) {
     draw_on_compositor_unlock_ = false;
     ScheduleDraw();
   }
 }
 
 }  // namespace aura