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

media/gpu/shared_memory_region.cc

Index: media/gpu/shared_memory_region.cc
diff --git a/content/common/gpu/media/shared_memory_region.cc b/media/gpu/shared_memory_region.cc
similarity index 92%
rename from content/common/gpu/media/shared_memory_region.cc
rename to media/gpu/shared_memory_region.cc
index 4ee6a24257827978d9746eae9a938e0474248d5c..13df2041ac6fb00f28b58b0b24d3daa0924258e2 100644
--- a/content/common/gpu/media/shared_memory_region.cc
+++ b/media/gpu/shared_memory_region.cc
@@ -3,9 +3,9 @@
 // found in the LICENSE file.
 
 #include "base/sys_info.h"
-#include "content/common/gpu/media/shared_memory_region.h"
+#include "media/gpu/shared_memory_region.h"
 
-namespace content {
+namespace media {
 
 SharedMemoryRegion::SharedMemoryRegion(const base::SharedMemoryHandle& handle,
                                        off_t offset,
@@ -39,4 +39,4 @@ void* SharedMemoryRegion::memory() {
   return addr ? addr + alignment_size_ : nullptr;
 }
 
-}  // namespace content
+}  // namespace media