HW Video: Make media::VideoFrame handle the sync point of the compositor as well as webgl

content/renderer/media/renderer_gpu_video_accelerator_factories.cc

Index: content/renderer/media/renderer_gpu_video_accelerator_factories.cc
diff --git a/content/renderer/media/renderer_gpu_video_accelerator_factories.cc b/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
index 02fd859d0cc1f3376cc971185f657ce9af98ff0c..88ced7b16a0b8a7951e10e80ed414065283856fc 100644
--- a/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
+++ b/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
@@ -150,6 +150,17 @@ void RendererGpuVideoAcceleratorFactories::DeleteTexture(uint32 texture_id) {
   DCHECK_EQ(gles2->GetError(), static_cast<GLenum>(GL_NO_ERROR));
 }
 
+uint32 RendererGpuVideoAcceleratorFactories::InsertSyncPoint() {
+  DCHECK(task_runner_->BelongsToCurrentThread());
+
+  WebGraphicsContext3DCommandBufferImpl* context = GetContext3d();
+  if (!context)
+    return 0;
+
+  gpu::gles2::GLES2Implementation* gles2 = context->GetImplementation();
+  return gles2->InsertSyncPointCHROMIUM();
+}
+
 void RendererGpuVideoAcceleratorFactories::WaitSyncPoint(uint32 sync_point) {
   DCHECK(task_runner_->BelongsToCurrentThread());
 
@@ -211,6 +222,7 @@ void RendererGpuVideoAcceleratorFactories::ReadPixels(
                     pixels.pixelRef()->pixels());
   gles2->DeleteFramebuffers(1, &fb);
   gles2->DeleteTextures(1, &tmp_texture);
+  gles2->Flush();
   DCHECK_EQ(gles2->GetError(), static_cast<GLenum>(GL_NO_ERROR));
 }