mus: Use a barebone mus client-lib in chrome-renderer.

content/renderer/mus/renderer_window_tree_client.h

+// Copyright 2017 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 CONTENT_RENDERER_MUS_RENDERER_WINDOW_TREE_CLIENT_H_
+#define CONTENT_RENDERER_MUS_RENDERER_WINDOW_TREE_CLIENT_H_
+
+#include "base/macros.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "services/ui/common/types.h"
+#include "services/ui/public/interfaces/window_tree.mojom.h"
+
+namespace cc {
+class CompositorFrameSink;
+class ContextProvider;
+}
+
+namespace gpu {
+class GpuMemoryBufferManager;
+}
+
+namespace ui {
+class WindowCompositorFrameSinkBinding;
+}
+
+namespace content {
+
+class RendererWindowTreeClient : public ui::mojom::WindowTreeClient {

[sky, 2017/01/24 17:39:31]

Add description. Also, document what threading assumptions are.

[sadrul, 2017/01/24 18:02:41]

Done.

+ public:
+  // Creates a RendererWindowTreeClient instance for the RenderWidget instance
+  // associated with |routing_id|. The instance self-destructs when the
+  // connection to mus is lost, or when the window is closed.
+  static void Create(int routing_id);
+
+  // Returns the RendererWindowTreeClient associated with |routing_id|. Returns
+  // nullptr if none exists.
+  static RendererWindowTreeClient* Get(int routing_id);
+
+  void Bind(ui::mojom::WindowTreeClientRequest request);
+
+  std::unique_ptr<cc::CompositorFrameSink> CreateCompositorFrameSink(
+      const cc::FrameSinkId& frame_sink_id,
+      scoped_refptr<cc::ContextProvider> context_provider,
+      gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager);
+
+ private:
+  explicit RendererWindowTreeClient(int routing_id);
+  ~RendererWindowTreeClient() override;
+
+  void DestroySelf();
+
+  // ui::mojom::WindowTreeClient:
+  // Note: A number of the following are currently not-implemented. Some of
+  // these will remain unimplemented in the long-term. Some of the
+  // implementations would require some amount of refactoring out of
+  // RenderWidget and related classes (e.g. resize, input, ime etc.).
+  void OnEmbed(ui::ClientSpecificId client_id,
+               ui::mojom::WindowDataPtr root,
+               ui::mojom::WindowTreePtr tree,
+               int64_t display_id,
+               ui::Id focused_window_id,
+               bool drawn) override;
+  void OnEmbeddedAppDisconnected(ui::Id window_id) override;
+  void OnUnembed(ui::Id window_id) override;
+  void OnCaptureChanged(ui::Id new_capture_window_id,
+                        ui::Id old_capture_window_id) override {}
+  void OnTopLevelCreated(uint32_t change_id,
+                         ui::mojom::WindowDataPtr data,
+                         int64_t display_id,
+                         bool drawn) override;
+  void OnWindowBoundsChanged(ui::Id window_id,
+                             const gfx::Rect& old_bounds,
+                             const gfx::Rect& new_bounds) override {}
+  void OnClientAreaChanged(
+      uint32_t window_id,
+      const gfx::Insets& new_client_area,
+      const std::vector<gfx::Rect>& new_additional_client_areas) override {}

[sky, 2017/01/24 17:39:31]

Style guide says not to inline virtual overriden functions.

[sadrul, 2017/01/24 18:02:41]

Done.

+  void OnTransientWindowAdded(uint32_t window_id,
+                              uint32_t transient_window_id) override {}
+  void OnTransientWindowRemoved(uint32_t window_id,
+                                uint32_t transient_window_id) override {}
+  void OnWindowHierarchyChanged(
+      ui::Id window_id,
+      ui::Id old_parent_id,
+      ui::Id new_parent_id,
+      std::vector<ui::mojom::WindowDataPtr> windows) override {}
+  void OnWindowReordered(ui::Id window_id,
+                         ui::Id relative_window_id,
+                         ui::mojom::OrderDirection direction) override {}
+  void OnWindowDeleted(ui::Id window_id) override;
+  void OnWindowVisibilityChanged(ui::Id window_id, bool visible) override {}
+  void OnWindowOpacityChanged(ui::Id window_id,
+                              float old_opacity,
+                              float new_opacity) override {}
+  void OnWindowParentDrawnStateChanged(ui::Id window_id, bool drawn) override {}
+  void OnWindowSharedPropertyChanged(
+      ui::Id window_id,
+      const std::string& name,
+      const base::Optional<std::vector<uint8_t>>& new_data) override {}
+  void OnWindowInputEvent(uint32_t event_id,
+                          ui::Id window_id,
+                          std::unique_ptr<ui::Event> event,
+                          bool matches_pointer_watcher) override;
+  void OnPointerEventObserved(std::unique_ptr<ui::Event> event,
+                              uint32_t window_id) override;
+  void OnWindowFocused(ui::Id focused_window_id) override {}
+  void OnWindowPredefinedCursorChanged(ui::Id window_id,
+                                       ui::mojom::Cursor cursor) override {}
+  void OnWindowSurfaceChanged(ui::Id window_id,
+                              const cc::SurfaceInfo& surface_info) override;
+  void OnDragDropStart(
+      const std::unordered_map<std::string, std::vector<uint8_t>>& mime_data)
+      override {}
+  void OnDragEnter(ui::Id window_id,
+                   uint32_t event_flags,
+                   const gfx::Point& position,
+                   uint32_t effect_bitmask,
+                   const OnDragEnterCallback& callback) override {}
+  void OnDragOver(ui::Id window_id,
+                  uint32_t event_flags,
+                  const gfx::Point& position,
+                  uint32_t effect_bitmask,
+                  const OnDragOverCallback& callback) override {}
+  void OnDragLeave(ui::Id window_id) override {}
+  void OnCompleteDrop(ui::Id window_id,
+                      uint32_t event_flags,
+                      const gfx::Point& position,
+                      uint32_t effect_bitmask,
+                      const OnCompleteDropCallback& callback) override {}
+  void OnPerformDragDropCompleted(uint32_t window,
+                                  bool success,
+                                  uint32_t action_taken) override {}
+  void OnDragDropDone() override {}
+  void OnChangeCompleted(uint32_t change_id, bool success) override {}
+  void RequestClose(uint32_t window_id) override {}
+  void GetWindowManager(
+      mojo::AssociatedInterfaceRequest<ui::mojom::WindowManager> internal)
+      override;
+
+  int routing_id_;

[sky, 2017/01/24 17:39:31]

const

[sadrul, 2017/01/24 18:02:41]

Done.

+  ui::Id root_window_id_;
+  ui::mojom::WindowTreePtr tree_;
+  std::unique_ptr<ui::WindowCompositorFrameSinkBinding> pending_frame_sink_;
+  mojo::Binding<ui::mojom::WindowTreeClient> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(RendererWindowTreeClient);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MUS_RENDERER_WINDOW_TREE_CLIENT_H_