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

ppapi/proxy/ppb_instance_proxy.h

 // 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.
 
 #ifndef PPAPI_PROXY_PPB_INSTANCE_PROXY_H_
 #define PPAPI_PROXY_PPB_INSTANCE_PROXY_H_
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/shared_impl/function_group_base.h"
 #include "ppapi/shared_impl/host_resource.h"
 #include "ppapi/shared_impl/instance_impl.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 class SerializedVarReceiveInput;
 class SerializedVarOutParam;
 class SerializedVarReturnValue;
 
 class PPB_Instance_Proxy : public InterfaceProxy,
                            public ppapi::InstanceImpl,
                            public ppapi::FunctionGroupBase,
                            public ppapi::thunk::PPB_Instance_FunctionAPI {
@@ skipping 62 matching lines @@
   void OnMsgRequestInputEvents(PP_Instance instance,
                                bool is_filtering,
                                uint32_t event_classes);
   void OnMsgClearInputEvents(PP_Instance instance,
                              uint32_t event_classes);
   void OnMsgPostMessage(PP_Instance instance,
                         SerializedVarReceiveInput message);
 };
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_INSTANCE_PROXY_H_