Index: content/browser/renderer_host/offscreen_canvas_surface_manager.h |
diff --git a/content/browser/renderer_host/offscreen_canvas_surface_manager.h b/content/browser/renderer_host/offscreen_canvas_surface_manager.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..0db737c35bb34a2bb06311292f0fa19f838dc40e |
--- /dev/null |
+++ b/content/browser/renderer_host/offscreen_canvas_surface_manager.h |
@@ -0,0 +1,41 @@ |
+// 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 CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_MANAGER_H_ |
+#define CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_MANAGER_H_ |
+ |
+#include "base/memory/weak_ptr.h" |
+#include "content/browser/renderer_host/offscreen_canvas_compositor_frame_sink.h" |
+#include "content/browser/renderer_host/offscreen_canvas_surface_impl.h" |
+ |
+namespace content { |
+ |
+class OffscreenCanvasSurfaceManager { |
+ public: |
+ OffscreenCanvasSurfaceManager(); |
+ ~OffscreenCanvasSurfaceManager(); |
+ |
+ // OffscreenCanvasSurfaceManager is lazily created only when it is needed. |
+ static OffscreenCanvasSurfaceManager* GetInstance(); |
+ static void Terminate(); |
+ |
+ void RegisterOffscreenCanvasSurfaceInstance(int canvas_id, |
+ OffscreenCanvasSurfaceImpl*); |
+ void UnregisterOffscreenCanvasSurfaceInstance(int canvas_id); |
+ |
+ void RegisterCompositorFrameSinkInstance(int canvas_id, |
+ OffscreenCanvasCompositorFrameSink*); |
+ void UnregisterCompositorFrameSinkInstance(int canvas_id); |
+ |
+ private: |
+ std::unordered_map<int, base::WeakPtr<OffscreenCanvasSurfaceImpl>> |
+ registered_surface_instances_; |
+ std::unordered_map<int, base::WeakPtr<OffscreenCanvasCompositorFrameSink>> |
+ registered_compositor_frame_sink_instances_; |
+ DISALLOW_COPY_AND_ASSIGN(OffscreenCanvasSurfaceManager); |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_MANAGER_H_ |