Use GVR async reprojection video surface for fullscreen in VR shell

content/public/browser/android/video_surface_manager.h

Index: content/public/browser/android/video_surface_manager.h
diff --git a/content/public/browser/android/video_surface_manager.h b/content/public/browser/android/video_surface_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..186748fd7fa7352d53397b0dd820b64b573e63d8
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+++ b/content/public/browser/android/video_surface_manager.h
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+// 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 CONTENT_PUBLIC_BROWSER_ANDROID_VIDEO_SURFACE_MANAGER_H_
+#define CONTENT_PUBLIC_BROWSER_ANDROID_VIDEO_SURFACE_MANAGER_H_
+
+#include "content/common/content_export.h"
+
+#include "content/public/browser/android/video_surface_provider.h"
+
+namespace content {
+
+class WebContents;
+
+class CONTENT_EXPORT VideoSurfaceManager {
+ public:
+  // Returns the Video Surface Manager.
+  static VideoSurfaceManager* GetInstance();
+
+  virtual ~VideoSurfaceManager() {}
+
+  // The default is to create an instance of ContentVideoView if an override
+  // provider has not been set.
+  virtual void SetOverrideVideoSurfaceProvider(
+      VideoSurfaceProvider* provider) = 0;
+  virtual void RemoveOverrideVideoSurfaceProvider(
+      VideoSurfaceProvider* provider) = 0;
+
+  // Returns the current video surface provider (there can only be one).
+  virtual VideoSurfaceProvider* GetVideoSurfaceProvider(
+      WebContents* web_contents) = 0;
+};
+
+}  // namespace content
+#endif // CONTENT_PUBLIC_BROWSER_ANDROID_VIDEO_SURFACE_MANAGER_H_