Add missing macros includes in media/.

media/cast/sender/external_video_encoder.h

 // Copyright 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_CAST_SENDER_EXTERNAL_VIDEO_ENCODER_H_
 #define MEDIA_CAST_SENDER_EXTERNAL_VIDEO_ENCODER_H_
 
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "media/cast/cast_environment.h"
 #include "media/cast/sender/size_adaptable_video_encoder_base.h"
 #include "media/cast/sender/video_encoder.h"
 #include "media/video/video_encode_accelerator.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace media {
 namespace cast {
@@ skipping 134 matching lines @@
   scoped_ptr<uint8_t[]> last_frame_pixel_buffer_;
   gfx::Size last_frame_size_;
 
   DISALLOW_COPY_AND_ASSIGN(QuantizerEstimator);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_SENDER_EXTERNAL_VIDEO_ENCODER_H_