mus: Implement Window Server Capture

components/mus/ws/display_manager.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/ws/display_manager.h"
 
 #include "base/numerics/safe_conversions.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/quads/render_pass.h"
@@ skipping 194 matching lines @@
 }
 
 void DefaultDisplayManager::SetViewportSize(const gfx::Size& size) {
   platform_window_->SetBounds(gfx::Rect(size));
 }
 
 void DefaultDisplayManager::SetTitle(const base::string16& title) {
   platform_window_->SetTitle(title);
 }
 
+void DefaultDisplayManager::SetCapture() {
+  platform_window_->SetCapture();
+}
+
+void DefaultDisplayManager::ReleaseCapture() {
+  platform_window_->ReleaseCapture();
+}
+
 const mojom::ViewportMetrics& DefaultDisplayManager::GetViewportMetrics() {
   return metrics_;
 }
 
 void DefaultDisplayManager::UpdateTextInputState(
     const ui::TextInputState& state) {
   ui::PlatformImeController* ime = platform_window_->GetPlatformImeController();
   if (ime)
     ime->UpdateTextInputState(state);
 }
@@ skipping 137 matching lines @@
   platform_window_->Close();
 }
 
 void DefaultDisplayManager::OnClosed() {
   delegate_->OnDisplayClosed();
 }
 
 void DefaultDisplayManager::OnWindowStateChanged(
     ui::PlatformWindowState new_state) {}
 
-void DefaultDisplayManager::OnLostCapture() {}
+void DefaultDisplayManager::OnLostCapture() {
+  delegate_->OnLostCapture();
+}
 
 void DefaultDisplayManager::OnAcceleratedWidgetAvailable(
     gfx::AcceleratedWidget widget,
     float device_pixel_ratio) {
   if (widget != gfx::kNullAcceleratedWidget) {
     top_level_display_client_.reset(
         new TopLevelDisplayClient(widget, gpu_state_, surfaces_state_));
     delegate_->OnTopLevelSurfaceChanged(
         top_level_display_client_->surface_id());
   }
   UpdateMetrics(metrics_.size_in_pixels.To<gfx::Size>(), device_pixel_ratio);
 }
 
 void DefaultDisplayManager::OnAcceleratedWidgetDestroyed() {
   NOTREACHED();
 }
 
 void DefaultDisplayManager::OnActivationChanged(bool active) {}
 
 }  // namespace ws
 
 }  // namespace mus