Change exo::SurfaceFactoryOwner to exo::ExoCompositorFrameSink

components/exo/exo_compositor_frame_sink.cc

Index: components/exo/exo_compositor_frame_sink.cc
diff --git a/components/exo/exo_compositor_frame_sink.cc b/components/exo/exo_compositor_frame_sink.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b41a2e20f19bb1631a24d033d1b43917f6958f46
--- /dev/null
+++ b/components/exo/exo_compositor_frame_sink.cc
@@ -0,0 +1,135 @@
+// 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.
+
+#include "components/exo/exo_compositor_frame_sink.h"
+
+#include "base/debug/stack_trace.h"
+#include "cc/surfaces/surface_manager.h"
+
+namespace exo {
+
+////////////////////////////////////////////////////////////////////////////////
+// ExoComopositorFrameSink, public:
+
+ExoCompositorFrameSink::ExoCompositorFrameSink(
+    const cc::FrameSinkId& frame_sink_id,
+    cc::SurfaceManager* surface_manager,
+    cc::mojom::MojoCompositorFrameSinkClientPtr client)
+    : frame_sink_id_(frame_sink_id),
+      surface_manager_(surface_manager),
+      surface_factory_(frame_sink_id, surface_manager, this),
+      client_(std::move(client)) {
+  surface_manager_->RegisterFrameSinkId(frame_sink_id_);
+  surface_manager_->RegisterSurfaceFactoryClient(frame_sink_id_, this);
+}
+
+ExoCompositorFrameSink::~ExoCompositorFrameSink() {
+  surface_factory_.EvictSurface();
+  surface_manager_->UnregisterSurfaceFactoryClient(frame_sink_id_);
+  surface_manager_->InvalidateFrameSinkId(frame_sink_id_);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// cc::SurfaceFactoryClient overrides:
+
+void ExoCompositorFrameSink::ReturnResources(
+    const cc::ReturnedResourceArray& resources) {
+  if (resources.empty())
+    return;
+
+  if (!ack_pending_count_ && client_) {
+    client_->ReclaimResources(resources);
+    return;
+  }
+
+  std::copy(resources.begin(), resources.end(),
+            std::back_inserter(surface_returned_resources_));
+}
+
+void ExoCompositorFrameSink::WillDrawSurface(const cc::LocalFrameId& id,
+                                             const gfx::Rect& damage_rect) {
+  if (client_)
+    client_->WillDrawSurface();
+}
+
+void ExoCompositorFrameSink::SetBeginFrameSource(
+    cc::BeginFrameSource* begin_frame_source) {
+  if (begin_frame_source_ && added_frame_observer_) {
+    begin_frame_source_->RemoveObserver(this);
+    added_frame_observer_ = false;
+  }
+  begin_frame_source_ = begin_frame_source;
+  UpdateNeedsBeginFrameInternal();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// cc::mojom::MojoCompositorFrameSink overrides:
+
+void ExoCompositorFrameSink::SetNeedsBeginFrame(bool needs_begin_frame) {
+  needs_begin_frame_ = needs_begin_frame;
+  UpdateNeedsBeginFrameInternal();
+}
+
+void ExoCompositorFrameSink::SubmitCompositorFrame(
+    const cc::LocalFrameId& local_frame_id,
+    cc::CompositorFrame frame) {
+  ++ack_pending_count_;
+  surface_factory_.SubmitCompositorFrame(
+      local_frame_id, std::move(frame),
+      base::Bind(&ExoCompositorFrameSink::DidReceiveCompositorFrameAck,
+                 base::Unretained(this)));
+  last_local_frame_id_ = local_frame_id;
+}
+
+void ExoCompositorFrameSink::EvictFrame() {
+  surface_factory_.EvictSurface();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// cc::BeginFrameObserver overrides:
+
+void ExoCompositorFrameSink::OnBeginFrame(const cc::BeginFrameArgs& args) {
+  UpdateNeedsBeginFrameInternal();
+  last_begin_frame_args_ = args;
+  if (client_)
+    client_->OnBeginFrame(args);
+}
+
+const cc::BeginFrameArgs& ExoCompositorFrameSink::LastUsedBeginFrameArgs()
+    const {
+  return last_begin_frame_args_;
+}
+
+void ExoCompositorFrameSink::OnBeginFrameSourcePausedChanged(bool paused) {}
+
+////////////////////////////////////////////////////////////////////////////////
+// ExoComopositorFrameSink, private:
+
+void ExoCompositorFrameSink::UpdateNeedsBeginFrameInternal() {
+  if (!begin_frame_source_)
+    return;
+
+  if (needs_begin_frame_ == added_frame_observer_)
+    return;
+
+  added_frame_observer_ = needs_begin_frame_;
+  if (needs_begin_frame_)
+    begin_frame_source_->AddObserver(this);
+  else
+    begin_frame_source_->RemoveObserver(this);
+}
+
+void ExoCompositorFrameSink::DidReceiveCompositorFrameAck() {
+  if (!client_)
+    return;
+  client_->DidReceiveCompositorFrameAck();
+  DCHECK_GT(ack_pending_count_, 0);
+  if (!surface_returned_resources_.empty()) {
+    client_->ReclaimResources(surface_returned_resources_);
+    surface_returned_resources_.clear();
+  }
+  ack_pending_count_--;
+}
+
+}  // namespace exo