Revert of Enable NV12 VideoFrames on Mac.

media/video/gpu_memory_buffer_video_frame_pool.cc

 // Copyright 2015 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.
 
 #include "media/video/gpu_memory_buffer_video_frame_pool.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <stddef.h>
 #include <stdint.h>
@@ skipping 184 matching lines @@
   }
 }
 
 unsigned ImageInternalFormat(VideoPixelFormat format, size_t plane) {
   switch (format) {
     case PIXEL_FORMAT_I420:
       DCHECK_LE(plane, 2u);
       return GL_RED_EXT;
     case PIXEL_FORMAT_NV12:
       DCHECK_LE(plane, 1u);
-      return GL_RGB_YCBCR_420V_CHROMIUM;
+      DLOG(WARNING) << "NV12 format not supported yet";
+      return 0;  // TODO(andresantoso): Implement extension for NV12.
     case PIXEL_FORMAT_UYVY:
       DCHECK_EQ(0u, plane);
       return GL_RGB_YCBCR_422_CHROMIUM;
     default:
       NOTREACHED();
       return 0;
   }
 }
 
 // The number of output planes to be copied in each iteration.
@@ skipping 558 matching lines @@
 }
 
 void GpuMemoryBufferVideoFramePool::MaybeCreateHardwareFrame(
     const scoped_refptr<VideoFrame>& video_frame,
     const FrameReadyCB& frame_ready_cb) {
   DCHECK(video_frame);
   pool_impl_->CreateHardwareFrame(video_frame, frame_ready_cb);
 }
 
 }  // namespace media