Move the remaning files in content\common to the content namespace.

content/common/np_channel_base.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_COMMON_NP_CHANNEL_BASE_H_
 #define CONTENT_COMMON_NP_CHANNEL_BASE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 26 matching lines @@
 namespace stdext {
 
 template<>
 inline size_t hash_value(NPObject* const& ptr) {
   return hash_value(reinterpret_cast<size_t>(ptr));
 }
 
 }  // namespace stdext
 #endif // COMPILER
 
+namespace content {
+
 // Encapsulates an IPC channel between a renderer and another process. Used to
 // proxy access to NP objects.
 class NPChannelBase : public IPC::Listener,
                       public IPC::Sender,
                       public base::RefCountedThreadSafe<NPChannelBase> {
  public:
 
   // WebPlugin[Delegate] call these on construction and destruction to setup
   // the routing and manage lifetime of this object (they pass NULL for
   // npobject). These are also called by NPObjectProxy and NPObjectStub (which
@@ skipping 134 matching lines @@
   // However to avoid deadlock, we must ensure that any message that's sent as
   // a result of a sync call from the renderer must unblock the renderer.  We
   // additionally have to do this for async messages from the renderer that
   // have the unblock flag set, since they could be followed by a sync message
   // that won't get dispatched until the call to the renderer is complete.
   bool send_unblocking_only_during_unblock_dispatch_;
 
   DISALLOW_COPY_AND_ASSIGN(NPChannelBase);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_NP_CHANNEL_BASE_H_