Implement hit tests/client area.

ui/views/mus/desktop_window_tree_host_mus.h

 // Copyright 2016 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.
 
 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_MUS_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_MUS_H_
 
 #include <memory>
 #include <set>
 
 #include "base/macros.h"
 #include "ui/aura/env_observer.h"
 #include "ui/aura/mus/window_tree_host_mus.h"
+#include "ui/views/mus/mus_client_observer.h"
 #include "ui/views/mus/mus_export.h"
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host.h"
 #include "ui/views/widget/widget.h"
 
 namespace views {
 
 class VIEWS_MUS_EXPORT DesktopWindowTreeHostMus
     : public DesktopWindowTreeHost,
+      public MusClientObserver,
       public aura::WindowTreeHostMus,
       public aura::EnvObserver {
  public:
   DesktopWindowTreeHostMus(
       internal::NativeWidgetDelegate* native_widget_delegate,
       DesktopNativeWidgetAura* desktop_native_widget_aura,
       const Widget::InitParams& init_params);
   ~DesktopWindowTreeHostMus() override;
 
  private:
   bool IsDocked() const;
 
+  void UpdateClientArea();

[sky, 2016/11/19 15:29:31]

optional: It isn't clear what these do. Maybe SendClientAreaToServer or at least
better descriptions.

[Elliot Glaysher, 2016/11/22 00:48:07]

Done.

+  void UpdateHitTestMask();
+
   // DesktopWindowTreeHost:
   void Init(aura::Window* content_window,
             const Widget::InitParams& params) override;
   void OnNativeWidgetCreated(const Widget::InitParams& params) override;
   std::unique_ptr<corewm::Tooltip> CreateTooltip() override;
   std::unique_ptr<aura::client::DragDropClient> CreateDragDropClient(
       DesktopNativeCursorManager* cursor_manager) override;
   void Close() override;
   void CloseNow() override;
   aura::WindowTreeHost* AsWindowTreeHost() override;
@@ skipping 41 matching lines @@
   void SetOpacity(float opacity) override;
   void SetWindowIcons(const gfx::ImageSkia& window_icon,
                       const gfx::ImageSkia& app_icon) override;
   void InitModalType(ui::ModalType modal_type) override;
   void FlashFrame(bool flash_frame) override;
   void OnRootViewLayout() override;
   bool IsAnimatingClosed() const override;
   bool IsTranslucentWindowOpacitySupported() const override;
   void SizeConstraintsChanged() override;
 
+  // MusClientObserver:
+  void OnWindowManagerFrameValuesChanged() override;
+
   // WindowTreeHostMus:
   void ShowImpl() override;
   void HideImpl() override;
   void SetBounds(const gfx::Rect& bounds_in_pixels) override;
 
   // aura::EnvObserver:
   void OnWindowInitialized(aura::Window* window) override;
   void OnActiveFocusClientChanged(aura::client::FocusClient* focus_client,
                                   aura::Window* window) override;
 
@@ skipping 14 matching lines @@
 
   // Used so that Close() isn't immediate.
   base::WeakPtrFactory<DesktopWindowTreeHostMus> close_widget_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostMus);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_MUS_H_