Put the Pepper stuff in the content namespace.

content/renderer/pepper/pepper_broker_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_BROKER_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_BROKER_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "ppapi/proxy/proxy_channel.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/ppb_broker_impl.h"
 
-class PepperPluginDelegateImpl;
-
 namespace IPC {
 struct ChannelHandle;
 }
 
 namespace ppapi {
 namespace proxy {
 class BrokerDispatcher;
 }
 }
 
 namespace webkit {
 namespace ppapi {
 class PluginModule;
 }
 }
 
+namespace content {
+
+class PepperPluginDelegateImpl;
+
 // This object is NOT thread-safe.
 class CONTENT_EXPORT PepperBrokerDispatcherWrapper {
  public:
   PepperBrokerDispatcherWrapper();
   ~PepperBrokerDispatcherWrapper();
 
   bool Init(base::ProcessHandle plugin_process_handle,
             const IPC::ChannelHandle& channel_handle);
 
   int32_t SendHandleToBroker(PP_Instance instance,
@@ skipping 41 matching lines @@
 
   // Pointer to the associated plugin module.
   // Always set and cleared at the same time as the module's pointer to this.
   webkit::ppapi::PluginModule* plugin_module_;
 
   base::WeakPtr<PepperPluginDelegateImpl> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperBrokerImpl);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_BROKER_IMPL_H_