media: Optimize HW Video to 2D Canvas copy.

media/filters/context_3d_provider.h

Index: media/filters/context_3d_provider.h
diff --git a/media/filters/context_3d_provider.h b/media/filters/context_3d_provider.h
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+++ b/media/filters/context_3d_provider.h
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+// Copyright (c) 2014 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 MEDIA_FILTERS_CONTEXT_3D_PROVIDER_H_
+#define MEDIA_FILTERS_CONTEXT_3D_PROVIDER_H_
+
+class GrContext;
+
+namespace gpu {
+namespace gles2 {
+class GLES2Interface;
+}
+}
+
+namespace media {
+
+// This struct can be used to make media use gpu::gles2::GLES2Interface and
+// GrContext.
+// Usage:
+// gpu::gles2::GLES2Interface* gl = ...;
+// GrContext* gr_context = ...;
+// Context3DProvider provider{gl, gr_context};
+
+struct Context3DProvider {
+  gpu::gles2::GLES2Interface* gl;
+  class GrContext* gr_context;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_FILTERS_CONTEXT_3D_PROVIDER_H_