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

content/renderer/renderer_main_platform_delegate_linux.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/renderer/renderer_main_platform_delegate.h"
 
 #include "base/command_line.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/sandbox_init.h"
 
+namespace content {
+
 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
-    const content::MainFunctionParams& parameters)
+    const MainFunctionParams& parameters)
     : parameters_(parameters) {
 }
 
 RendererMainPlatformDelegate::~RendererMainPlatformDelegate() {
 }
 
 void RendererMainPlatformDelegate::PlatformInitialize() {
 }
 
 void RendererMainPlatformDelegate::PlatformUninitialize() {
 }
 
 bool RendererMainPlatformDelegate::InitSandboxTests(bool no_sandbox) {
   // The sandbox is started in the zygote process: zygote_main_linux.cc
   // http://code.google.com/p/chromium/wiki/LinuxSUIDSandbox
   return true;
 }
 
 bool RendererMainPlatformDelegate::EnableSandbox() {
   // The setuid sandbox is started in the zygote process: zygote_main_linux.cc
   // http://code.google.com/p/chromium/wiki/LinuxSUIDSandbox
   //
   // The seccomp sandbox mode 1 (sandbox/linux/seccomp-legacy) and mode 2
   // (sandbox/linux/seccomp-bpf) are started in InitializeSandbox().
-  content::InitializeSandbox();
+  InitializeSandbox();
   return true;
 }
 
 void RendererMainPlatformDelegate::RunSandboxTests() {
   // The sandbox is started in the zygote process: zygote_main_linux.cc
   // http://code.google.com/p/chromium/wiki/LinuxSUIDSandbox
 }
+
+}  // namespace content