Create //components/viz/frame_sinks and move code.

services/ui/surfaces/mojo_frame_sink_manager.cc

-// Copyright 2015 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 "services/ui/surfaces/mojo_frame_sink_manager.h"
-
-#include <utility>
-
-#include "base/command_line.h"
-#include "base/memory/ptr_util.h"
-#include "cc/base/switches.h"
-#include "cc/scheduler/begin_frame_source.h"
-#include "cc/surfaces/display.h"
-#include "cc/surfaces/surface_dependency_tracker.h"
-#include "components/display_compositor/gpu_compositor_frame_sink.h"
-#include "components/display_compositor/gpu_root_compositor_frame_sink.h"
-#include "services/ui/surfaces/display_provider.h"
-
-namespace ui {
-
-MojoFrameSinkManager::MojoFrameSinkManager(
-    DisplayProvider* display_provider,
-    cc::mojom::FrameSinkManagerRequest request,
-    cc::mojom::FrameSinkManagerClientPtr client)
-    : manager_(cc::SurfaceManager::LifetimeType::REFERENCES),
-      display_provider_(display_provider),
-      client_(std::move(client)),
-      binding_(this, std::move(request)) {
-  manager_.AddObserver(this);
-}
-
-MojoFrameSinkManager::~MojoFrameSinkManager() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  manager_.RemoveObserver(this);
-}
-
-void MojoFrameSinkManager::CreateRootCompositorFrameSink(
-    const cc::FrameSinkId& frame_sink_id,
-    gpu::SurfaceHandle surface_handle,
-    cc::mojom::MojoCompositorFrameSinkAssociatedRequest request,
-    cc::mojom::MojoCompositorFrameSinkPrivateRequest private_request,
-    cc::mojom::MojoCompositorFrameSinkClientPtr client,
-    cc::mojom::DisplayPrivateAssociatedRequest display_private_request) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  DCHECK_NE(surface_handle, gpu::kNullSurfaceHandle);
-  DCHECK_EQ(0u, compositor_frame_sinks_.count(frame_sink_id));
-  DCHECK(display_provider_);
-
-  std::unique_ptr<cc::BeginFrameSource> begin_frame_source;
-  std::unique_ptr<cc::Display> display = display_provider_->CreateDisplay(
-      frame_sink_id, surface_handle, &begin_frame_source);
-
-  // Lazily inject a SurfaceDependencyTracker into SurfaceManager if surface
-  // synchronization is enabled.
-  if (!manager_.dependency_tracker() &&
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          cc::switches::kEnableSurfaceSynchronization)) {
-    std::unique_ptr<cc::SurfaceDependencyTracker> dependency_tracker(
-        new cc::SurfaceDependencyTracker(&manager_, begin_frame_source.get()));
-    manager_.SetDependencyTracker(std::move(dependency_tracker));
-  }
-
-  compositor_frame_sinks_[frame_sink_id] =
-      base::MakeUnique<display_compositor::GpuRootCompositorFrameSink>(
-          this, &manager_, frame_sink_id, std::move(display),
-          std::move(begin_frame_source), std::move(request),
-          std::move(private_request), std::move(client),
-          std::move(display_private_request));
-}
-
-void MojoFrameSinkManager::CreateCompositorFrameSink(
-    const cc::FrameSinkId& frame_sink_id,
-    cc::mojom::MojoCompositorFrameSinkRequest request,
-    cc::mojom::MojoCompositorFrameSinkPrivateRequest private_request,
-    cc::mojom::MojoCompositorFrameSinkClientPtr client) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  DCHECK_EQ(0u, compositor_frame_sinks_.count(frame_sink_id));
-
-  compositor_frame_sinks_[frame_sink_id] =
-      base::MakeUnique<display_compositor::GpuCompositorFrameSink>(
-          this, &manager_, frame_sink_id, std::move(request),
-          std::move(private_request), std::move(client));
-}
-
-void MojoFrameSinkManager::RegisterFrameSinkHierarchy(
-    const cc::FrameSinkId& parent_frame_sink_id,
-    const cc::FrameSinkId& child_frame_sink_id) {
-  manager_.RegisterFrameSinkHierarchy(parent_frame_sink_id,
-                                      child_frame_sink_id);
-}
-
-void MojoFrameSinkManager::UnregisterFrameSinkHierarchy(
-    const cc::FrameSinkId& parent_frame_sink_id,
-    const cc::FrameSinkId& child_frame_sink_id) {
-  manager_.UnregisterFrameSinkHierarchy(parent_frame_sink_id,
-                                        child_frame_sink_id);
-}
-
-void MojoFrameSinkManager::DropTemporaryReference(
-    const cc::SurfaceId& surface_id) {
-  manager_.DropTemporaryReference(surface_id);
-}
-
-void MojoFrameSinkManager::DestroyCompositorFrameSink(cc::FrameSinkId sink_id) {
-  compositor_frame_sinks_.erase(sink_id);
-}
-
-void MojoFrameSinkManager::OnSurfaceCreated(
-    const cc::SurfaceInfo& surface_info) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  DCHECK_GT(surface_info.device_scale_factor(), 0.0f);
-
-  // TODO(kylechar): |client_| will try to find an owner for the temporary
-  // reference to the new surface. With surface synchronization this might not
-  // be necessary, because a surface reference might already exist and no
-  // temporary reference was created. It could be useful to let |client_| know
-  // if it should find an owner.
-  if (client_)
-    client_->OnSurfaceCreated(surface_info);
-}
-
-void MojoFrameSinkManager::OnSurfaceDamaged(const cc::SurfaceId& surface_id,
-                                            bool* changed) {}
-
-void MojoFrameSinkManager::OnClientConnectionLost(
-    const cc::FrameSinkId& frame_sink_id,
-    bool destroy_compositor_frame_sink) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (destroy_compositor_frame_sink)
-    DestroyCompositorFrameSink(frame_sink_id);
-  // TODO(fsamuel): Tell the frame sink manager host that the client connection
-  // has been lost so that it can drop its private connection and allow a new
-  // client instance to create a new CompositorFrameSink.
-}
-
-void MojoFrameSinkManager::OnPrivateConnectionLost(
-    const cc::FrameSinkId& frame_sink_id,
-    bool destroy_compositor_frame_sink) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (destroy_compositor_frame_sink)
-    DestroyCompositorFrameSink(frame_sink_id);
-}
-
-}  // namespace ui