Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/common/gpu/gpu_channel.h

Index: content/common/gpu/gpu_channel.h
===================================================================
--- content/common/gpu/gpu_channel.h	(revision 163290)
+++ content/common/gpu/gpu_channel.h	(working copy)
@@ -28,9 +28,7 @@
 #include "content/common/android/surface_texture_peer.h"
 #endif
 
-class GpuChannelManager;
 struct GPUCreateCommandBufferConfig;
-class GpuWatchdog;
 
 namespace base {
 class MessageLoopProxy;
@@ -50,6 +48,10 @@
 }
 #endif
 
+namespace content {
+class GpuChannelManager;
+class GpuWatchdog;
+
 // Encapsulates an IPC channel between the GPU process and one renderer
 // process. On the renderer side there's a corresponding GpuChannelHost.
 class GpuChannel : public IPC::Listener,
@@ -135,7 +137,7 @@
       scoped_refptr<gpu::RefCountedCounter> preempt_by_counter);
 
 #if defined(OS_ANDROID)
-  content::StreamTextureManagerAndroid* stream_texture_manager() {
+  StreamTextureManagerAndroid* stream_texture_manager() {
     return stream_texture_manager_.get();
   }
 #endif
@@ -168,7 +170,7 @@
   // Create a java surface texture object and send it to the renderer process
   // through binder thread.
   void OnEstablishStreamTexture(
-      int32 stream_id, content::SurfaceTexturePeer::SurfaceTextureTarget type,
+      int32 stream_id, SurfaceTexturePeer::SurfaceTextureTarget type,
       int32 primary_id, int32 secondary_id);
 #endif
 
@@ -222,7 +224,7 @@
   bool processed_get_state_fast_;
 
 #if defined(OS_ANDROID)
-  scoped_ptr<content::StreamTextureManagerAndroid> stream_texture_manager_;
+  scoped_ptr<StreamTextureManagerAndroid> stream_texture_manager_;
 #endif
 
   base::WeakPtrFactory<GpuChannel> weak_factory_;
@@ -230,4 +232,6 @@
   DISALLOW_COPY_AND_ASSIGN(GpuChannel);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_GPU_GPU_CHANNEL_H_