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

ppapi/proxy/ppb_opengles2_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/ppb_opengles2_proxy.h"
 
 #include "ppapi/shared_impl/opengles2_impl.h"
 
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 namespace {
 InterfaceProxy* CreateOpenGLES2Proxy(Dispatcher* dispatcher,
                                      const void* target_interface) {
   return new PPB_OpenGLES2_Proxy(dispatcher, target_interface);
 }
 }  // namespace
 
 PPB_OpenGLES2_Proxy::PPB_OpenGLES2_Proxy(Dispatcher* dispatcher,
@@ skipping 14 matching lines @@
     &CreateOpenGLES2Proxy,
   };
   return &info;
 }
 
 bool PPB_OpenGLES2_Proxy::OnMessageReceived(const IPC::Message& msg) {
   return false;
 }
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi