Move content's a plugin, ppapi_plugin, utility, and worker subdirectories to the content namespace.

content/ppapi_plugin/plugin_process_dispatcher.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/ppapi_plugin/plugin_process_dispatcher.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "content/common/child_process.h"
 
+namespace content {
 namespace {
 
 // How long we wait before releasing the plugin process.
 const int kPluginReleaseTimeSeconds = 30;
 
 }  // namespace
 
 PluginProcessDispatcher::PluginProcessDispatcher(
     PP_GetInterface_Func get_interface,
     const ppapi::PpapiPermissions& permissions,
     bool incognito)
     : ppapi::proxy::PluginDispatcher(get_interface,
                                      permissions,
                                      incognito) {
   ChildProcess::current()->AddRefProcess();
 }
 
 PluginProcessDispatcher::~PluginProcessDispatcher() {
   // Don't free the process right away. This timer allows the child process
   // to be re-used if the user rapidly goes to a new page that requires this
   // plugin. This is the case for common plugins where they may be used on a
   // source and destination page of a navigation. We don't want to tear down
   // and re-start processes each time in these cases.
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&ChildProcess::ReleaseProcess,
                  base::Unretained(ChildProcess::current())),
       base::TimeDelta::FromSeconds(kPluginReleaseTimeSeconds));
 }
+
+}  // namespace content