Use SwapBuffersWithBounds on Chromecast

cc/output/overlay_strategy_underlay_cast.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 CC_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_CAST_H_
+#define CC_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_CAST_H_
+
+#include <vector>
+
+#include "base/macros.h"
+#include "cc/output/overlay_strategy_underlay.h"
+
+namespace cc {
+
+class OverlayCandidateValidator;
+
+// Similar to underlay strategy plus Cast-specific handling of content bounds.
+class CC_EXPORT OverlayStrategyUnderlayCast : public OverlayStrategyUnderlay {
+ public:
+  explicit OverlayStrategyUnderlayCast(
+      OverlayCandidateValidator* capability_checker);
+  ~OverlayStrategyUnderlayCast() override;
+
+  bool Attempt(ResourceProvider* resource_provider,
+               RenderPass* render_pass,
+               OverlayCandidateList* candidate_list) override;
+  void GetContentBounds(std::vector<gfx::Rect>* bounds) override;

[danakj, 2017/02/14 17:28:58]

shall we add the bounds to the Attempt method instead? Then we won't need a
member var and class-level state between these two methods.

[halliwell, 2017/02/15 22:29:04]

Done.

+
+ private:
+  std::vector<gfx::Rect> content_bounds_;
+  DISALLOW_COPY_AND_ASSIGN(OverlayStrategyUnderlayCast);
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_CAST_H_