Put the Pepper stuff in the content namespace.

content/renderer/pepper/pepper_device_enumeration_event_handler.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/pepper/pepper_device_enumeration_event_handler.h"
 
 #include "base/logging.h"
 #include "ppapi/shared_impl/ppb_device_ref_shared.h"
 
+namespace content {
+
 namespace {
 
 ppapi::DeviceRefData FromStreamDeviceInfo(
     const media_stream::StreamDeviceInfo& info) {
   ppapi::DeviceRefData data;
   data.id = info.device_id;
   data.name = info.name;
   data.type = PepperDeviceEnumerationEventHandler::FromMediaStreamType(
       info.stream_type);
   return data;
@@ skipping 132 matching lines @@
   if (iter == open_callbacks_.end()) {
     NOTREACHED();
     return;
   }
 
   PepperPluginDelegateImpl::OpenDeviceCallback callback = iter->second;
   open_callbacks_.erase(iter);
 
   callback.Run(request_id, succeeded, label);
 }
+
+}  // namespace content