Convert the pp::proxy namespace to the ppapi::proxy namespace.

ppapi/proxy/ppp_instance_private_proxy.cc

 // Copyright (c) 2011 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 "ppapi/proxy/ppp_instance_private_proxy.h"
 
 #include <algorithm>
 
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/private/ppp_instance_private.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 namespace {
 
 PP_Var GetInstanceObject(PP_Instance instance) {
   Dispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
   ReceiveSerializedVarReturnValue result;
   dispatcher->Send(new PpapiMsg_PPPInstancePrivate_GetInstanceObject(
       INTERFACE_ID_PPP_INSTANCE_PRIVATE, instance, &result));
   return result.Return(dispatcher);
@@ skipping 41 matching lines @@
 }
 
 void PPP_Instance_Private_Proxy::OnMsgGetInstanceObject(
     PP_Instance instance,
     SerializedVarReturnValue result) {
   result.Return(dispatcher(),
                 ppp_instance_private_target()->GetInstanceObject(instance));
 }
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi