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

ppapi/proxy/host_var_serialization_rules.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/host_var_serialization_rules.h"
 
 #include "base/logging.h"
 #include "ppapi/c/ppb_var.h"
 
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 HostVarSerializationRules::HostVarSerializationRules(
     const PPB_Var* var_interface,
     PP_Module pp_module)
     : var_interface_(var_interface),
       pp_module_(pp_module) {
 }
 
 HostVarSerializationRules::~HostVarSerializationRules() {
@@ skipping 65 matching lines @@
   uint32_t len = 0;
   const char* data = var_interface_->VarToUtf8(var, &len);
   str->assign(data, len);
 }
 
 void HostVarSerializationRules::ReleaseObjectRef(const PP_Var& var) {
   var_interface_->Release(var);
 }
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi