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_mac.mm

 // 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"
 
 #import <Cocoa/Cocoa.h>
 #include <objc/runtime.h>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/sys_string_conversions.h"
 #include "content/common/sandbox_mac.h"
 #include "content/public/common/content_switches.h"
 #import "content/public/common/injection_test_mac.h"
 #include "content/common/sandbox_init_mac.h"
 
+namespace content {
+
 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
-    const content::MainFunctionParams& parameters)
+    const MainFunctionParams& parameters)
         : parameters_(parameters) {
 }
 
 RendererMainPlatformDelegate::~RendererMainPlatformDelegate() {
 }
 
 // TODO(mac-port): Any code needed to initialize a process for purposes of
 // running a renderer needs to also be reflected in chrome_main.cc for
 // --single-process support.
 void RendererMainPlatformDelegate::PlatformInitialize() {
@@ skipping 35 matching lines @@
       NOTREACHED() << "Failed to load bundle";
       return false;
     }
     sandbox_tests_bundle_ = [tests_bundle retain];
     [objc_getClass("RendererSandboxTestsRunner") setLogFunction:LogTestMessage];
   }
   return true;
 }
 
 bool RendererMainPlatformDelegate::EnableSandbox() {
-  return content::InitializeSandbox();
+  return InitializeSandbox();
 }
 
 void RendererMainPlatformDelegate::RunSandboxTests() {
   Class tests_runner = objc_getClass("RendererSandboxTestsRunner");
   if (tests_runner) {
     if (![tests_runner runTests])
       LOG(ERROR) << "Running renderer with failing sandbox tests!";
     [sandbox_tests_bundle_ unload];
     [sandbox_tests_bundle_ release];
     sandbox_tests_bundle_ = nil;
   }
 }
+
+}  // namespace content