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

content/test/mock_render_process.cc

 // Copyright (c) 2012 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.
 
 #include "content/test/mock_render_process.h"
 
 #include "ui/gfx/rect.h"
 #include "ui/surface/transport_dib.h"
 
+namespace content {
+
 MockRenderProcess::MockRenderProcess()
     : transport_dib_next_sequence_number_(0),
       enabled_bindings_(0) {
 }
 
 MockRenderProcess::~MockRenderProcess() {
 }
 
 skia::PlatformCanvas* MockRenderProcess::GetDrawingCanvas(
     TransportDIB** memory,
@@ skipping 27 matching lines @@
 }
 
 TransportDIB* MockRenderProcess::CreateTransportDIB(size_t size) {
   return TransportDIB::Create(size, transport_dib_next_sequence_number_++);
 }
 
 void MockRenderProcess::FreeTransportDIB(TransportDIB* dib) {
   delete dib;
 }
 
+}  // namespace content