Refactor content/common/gpu into gpu/ipc/service

gpu/ipc/service/ca_layer_tree_mac.mm

Index: gpu/ipc/service/ca_layer_tree_mac.mm
diff --git a/content/common/gpu/ca_layer_tree_mac.mm b/gpu/ipc/service/ca_layer_tree_mac.mm
similarity index 99%
rename from content/common/gpu/ca_layer_tree_mac.mm
rename to gpu/ipc/service/ca_layer_tree_mac.mm
index cac3dfe9ac10de8a00793e059a96180838d3e06c..110470e42bbe9e1774960cff9fbc750dde55d24a 100644
--- a/content/common/gpu/ca_layer_tree_mac.mm
+++ b/gpu/ipc/service/ca_layer_tree_mac.mm
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/common/gpu/ca_layer_tree_mac.h"
+#include "gpu/ipc/service/ca_layer_tree_mac.h"
 
 #include <AVFoundation/AVFoundation.h>
 #include <CoreMedia/CoreMedia.h>
@@ -44,7 +44,7 @@ extern CFStringRef const kCMSampleAttachmentKey_DisplayImmediately;
 extern const CMTime kCMTimeInvalid;
 #endif  // MAC_OS_X_VERSION_10_8
 
-namespace content {
+namespace gpu {
 
 namespace {
 
@@ -565,4 +565,4 @@ void CALayerTree::ContentLayer::CommitToCA(CALayer* superlayer,
   }
 }
 
-}  // namespace content
+}  // namespace gpu