mac: Remove more media/base/mac glue unneeded now that we target 10.9

media/gpu/vt_video_encode_accelerator_mac.h

Index: media/gpu/vt_video_encode_accelerator_mac.h
diff --git a/media/gpu/vt_video_encode_accelerator_mac.h b/media/gpu/vt_video_encode_accelerator_mac.h
index 1a632e4e55134e9379fabdf98d3d8cbcb51a07ab..a177b51f3742a7eafc3fca9e7ca2aac287004f7d 100644
--- a/media/gpu/vt_video_encode_accelerator_mac.h
+++ b/media/gpu/vt_video_encode_accelerator_mac.h
@@ -14,7 +14,6 @@
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_checker.h"
-#include "media/base/mac/videotoolbox_glue.h"
 #include "media/base/mac/videotoolbox_helpers.h"
 #include "media/gpu/media_gpu_export.h"
 #include "media/video/video_encode_accelerator.h"
@@ -46,10 +45,6 @@ class MEDIA_GPU_EXPORT VTVideoEncodeAccelerator
   void Destroy() override;
 
  private:
-  using CMSampleBufferRef = CoreMediaGlue::CMSampleBufferRef;
-  using VTCompressionSessionRef = VideoToolboxGlue::VTCompressionSessionRef;
-  using VTEncodeInfoFlags = VideoToolboxGlue::VTEncodeInfoFlags;
-
   // Holds the associated data of a video frame being processed.
   struct InProgressFrameEncode;
 
@@ -107,8 +102,6 @@ class MEDIA_GPU_EXPORT VTVideoEncodeAccelerator
   // encoding work).
   void DestroyCompressionSession();
 
-  // VideoToolboxGlue provides access to VideoToolbox at runtime.
-  const VideoToolboxGlue* videotoolbox_glue_;
   base::ScopedCFTypeRef<VTCompressionSessionRef> compression_session_;
 
   gfx::Size input_visible_size_;