16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support.

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 3925929c42f35ffd8ab07bb1dc9907ded7a9f8c4..d07b07d262a0201001df3cf300a0a51c440af48a 100644
--- a/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
+++ b/content/renderer/media/renderer_gpu_video_accelerator_factories.cc
@@ -222,6 +222,7 @@ RendererGpuVideoAcceleratorFactories::AllocateGpuMemoryBuffer(
           size, format, usage, gpu::kNullSurfaceHandle);
   return buffer;
 }
+
 bool RendererGpuVideoAcceleratorFactories::
     ShouldUseGpuMemoryBuffersForVideoFrames() const {
   return enable_gpu_memory_buffer_video_frames_;
@@ -236,12 +237,15 @@ unsigned RendererGpuVideoAcceleratorFactories::ImageTextureTarget(
 }
 
 media::VideoPixelFormat
-RendererGpuVideoAcceleratorFactories::VideoFrameOutputFormat() {
+RendererGpuVideoAcceleratorFactories::VideoFrameOutputFormat(
+    media::VideoPixelFormat format) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   if (CheckContextLost())
     return media::PIXEL_FORMAT_UNKNOWN;
   cc::ContextProvider::ScopedContextLock lock(context_provider_);
   auto capabilities = context_provider_->ContextCapabilities();
+  if (format == media::PIXEL_FORMAT_Y8 || format == media::PIXEL_FORMAT_Y16)
+    return capabilities.texture_rg ? format : media::PIXEL_FORMAT_UNKNOWN;
   if (capabilities.image_ycbcr_420v)
     return media::PIXEL_FORMAT_NV12;
   if (capabilities.image_ycbcr_422)