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

ppapi/proxy/ppb_testing_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_testing_proxy.h"
 
 #include "base/message_loop.h"
 #include "ppapi/c/dev/ppb_testing_dev.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/resource.h"
 
-using ppapi::HostResource;
-using ppapi::Resource;
-
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 namespace {
 
 PP_Bool ReadImageData(PP_Resource graphics_2d,
                       PP_Resource image,
                       const PP_Point* top_left) {
   Resource* image_object = PluginResourceTracker::GetInstance()->
       GetResource(image);
   if (!image_object)
@@ skipping 100 matching lines @@
 void PPB_Testing_Proxy::OnMsgQuitMessageLoop(PP_Instance instance) {
   ppb_testing_target()->QuitMessageLoop(instance);
 }
 
 void PPB_Testing_Proxy::OnMsgGetLiveObjectsForInstance(PP_Instance instance,
                                                        uint32_t* result) {
   *result = ppb_testing_target()->GetLiveObjectsForInstance(instance);
 }
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi