Made full screen video with DevTools not flash black on Android.

content/common/gpu/media/android_deferred_rendering_backing_strategy.h

Index: content/common/gpu/media/android_deferred_rendering_backing_strategy.h
diff --git a/content/common/gpu/media/android_deferred_rendering_backing_strategy.h b/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
index 830eca307dbc8c2011e4fb88d4c5d721a337a3d0..4315077af1429e94b815ca4701fd1f5f9049d66e 100644
--- a/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
+++ b/content/common/gpu/media/android_deferred_rendering_backing_strategy.h
@@ -10,6 +10,7 @@
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/media/android_video_decode_accelerator.h"
+#include "ui/gl/gl_bindings.h"
 
 namespace gl {
 class GLImage;
@@ -46,7 +47,7 @@ class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
   uint32_t GetTextureTarget() const override;
   void UseCodecBufferForPictureBuffer(int32_t codec_buffer_index,
                                       const media::PictureBuffer&) override;
-  void AssignOnePictureBuffer(const media::PictureBuffer&) override;
+  void AssignOnePictureBuffer(const media::PictureBuffer&, bool) override;
   void ReuseOnePictureBuffer(const media::PictureBuffer&) override;
   void DismissOnePictureBuffer(const media::PictureBuffer&) override;
   void CodecChanged(
@@ -79,10 +80,26 @@ class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
   // not set.
   bool DoesSurfaceTextureDetachWork() const;
 
+  // Create an EGLImage by creating a 2D texture, calling |init_texture| while
+  // it's bound, and then creating the EGLImage from that.  The caller takes
+  // ownership of the resulting EGLImage.
+  EGLImageKHR CreateImageFromTexture(
+      const base::Callback<bool(GLint source_id)>& init_texture);
+
+  // Init |source_id| to be a copy of the current |surface_texture_| buffer.
+  // |source_id| is the service id of the 2D texture.
+  bool InitTextureWithCopy(GLint source_id);
+
+  // Init |source_id| to be a 1x1 transparent texture.
+  bool InitTransparentTexture(GLint source_id);
+
   scoped_refptr<AVDASharedState> shared_state_;
 
   AVDAStateProvider* state_provider_;
 
+  // EGLImage for a 1x1 transparent texture, or EGL_NO_IMAGE_KHR.
+  EGLImageKHR transparent_image_;
+
   // The SurfaceTexture to render to. Non-null after Initialize() if
   // we're not rendering to a SurfaceView.
   scoped_refptr<gfx::SurfaceTexture> surface_texture_;