mus: Implement Window Server Capture

components/mus/public/cpp/lib/window.cc

 // Copyright 2014 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 "components/mus/public/cpp/window.h"
 
 #include <set>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 359 matching lines @@
     static_cast<WindowTreeClientImpl*>(connection_)
         ->SetShowState(id_, show_state);
 }
 
 void Window::SetResizeBehavior(mojom::ResizeBehavior resize_behavior) {
   if (connection_)
     static_cast<WindowTreeClientImpl*>(connection_)
         ->SetResizeBehavior(id_, resize_behavior);
 }
 
+void Window::SetCapture() {
+  if (connection_)

[sky, 2015/11/17 01:06:41]

We should track capture locally too.

+    static_cast<WindowTreeClientImpl*>(connection_)->SetCapture(this);
+}
+
+void Window::ReleaseCapture() {
+  if (connection_)
+    static_cast<WindowTreeClientImpl*>(connection_)->ReleaseCapture(this);
+}
+
 void Window::SetFocus() {
   if (connection_)
     static_cast<WindowTreeClientImpl*>(connection_)->SetFocus(id_);
 }
 
 bool Window::HasFocus() const {
   return connection_ && connection_->GetFocusedWindow() == this;
 }
 
 void Window::Embed(mus::mojom::WindowTreeClientPtr client) {
@@ skipping 405 matching lines @@
     notifier->NotifyWindowReordered();
 
   return true;
 }
 
 // static
 Window** Window::GetStackingTarget(Window* window) {
   return &window->stacking_target_;
 }
 }  // namespace mus