Migrate content/common/gpu/media code to media/gpu

media/gpu/shared_memory_region.h

 // Copyright (c) 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.
 
-#ifndef CONTENT_COMMON_GPU_MEDIA_SHARED_MEMORY_REGION_H_
-#define CONTENT_COMMON_GPU_MEDIA_SHARED_MEMORY_REGION_H_
+#ifndef MEDIA_GPU_SHARED_MEMORY_REGION_H_
+#define MEDIA_GPU_SHARED_MEMORY_REGION_H_
 
 #include "base/memory/shared_memory.h"
 #include "media/base/bitstream_buffer.h"
 
-namespace content {
+namespace media {
 
 // Helper class to access a region of a SharedMemory. Different from
 // SharedMemory, in which the |offset| of function MapAt() must be aligned to
 // the value of |SysInfo::VMAllocationGranularity()|, the |offset| of a
 // SharedMemoryRegion needs not to be aligned, this class hides the details
 // and returns the mapped address of the given offset.
 class SharedMemoryRegion {
  public:
   // Creates a SharedMemoryRegion.
   // The mapped memory region begins at |offset| bytes from the start of the
@@ skipping 23 matching lines @@
 
  private:
   base::SharedMemory shm_;
   off_t offset_;
   size_t size_;
   size_t alignment_size_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedMemoryRegion);
 };
 
-}  // namespace content
+}  // namespace media
 
-#endif  // CONTENT_COMMON_GPU_MEDIA_SHARED_MEMORY_REGION_H_
+#endif  // MEDIA_GPU_SHARED_MEMORY_REGION_H_