Refactor BrowserViewRenderer-RenderThreadManager relationship.

android_webview/browser/compositor_frame_consumer.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 ANDROID_WEBVIEW_BROWSER_COMPOSITOR_FRAME_CONSUMER_H_
+#define ANDROID_WEBVIEW_BROWSER_COMPOSITOR_FRAME_CONSUMER_H_
+
+#include <map>
+
+#include "android_webview/browser/parent_compositor_draw_constraints.h"
+#include "cc/resources/returned_resource.h"
+#include "ui/gfx/geometry/vector2d.h"
+
+namespace android_webview {
+
+class ChildFrame;
+class CompositorFrameProducer;
+
+class CompositorFrameConsumer {
+ public:
+  struct ReturnedResources {
+    ReturnedResources();
+    ~ReturnedResources();
+
+    uint32_t output_surface_id;
+    cc::ReturnedResourceArray resources;
+  };
+  using ReturnedResourcesMap = std::map<uint32_t, ReturnedResources>;
+
+  virtual void SetCompositorFrameProducer(
+      CompositorFrameProducer* compositor_frame_producer) = 0;
+  virtual void SetScrollOffsetOnUI(gfx::Vector2d scroll_offset) = 0;
+  virtual void SetFrameOnUI(std::unique_ptr<ChildFrame> frame) = 0;
+  virtual void InitializeHardwareDrawIfNeededOnUI() = 0;
+  virtual ParentCompositorDrawConstraints GetParentDrawConstraintsOnUI()
+      const = 0;
+  virtual void SwapReturnedResourcesOnUI(
+      ReturnedResourcesMap* returned_resource_map) = 0;
+  virtual bool ReturnedResourcesEmptyOnUI() const = 0;
+  virtual std::unique_ptr<ChildFrame> PassUncommittedFrameOnUI() = 0;
+  virtual bool HasFrameOnUI() const = 0;
+  virtual void DeleteHardwareRendererOnUI() = 0;
+
+ protected:
+  virtual ~CompositorFrameConsumer() {}
+};
+
+}  // namespace android_webview
+
+#endif  // ANDROID_WEBVIEW_BROWSER_COMPOSITOR_FRAME_PRODUCER_H_