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

ppapi/proxy/ppp_instance_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_proxy.h"
 
 #include <algorithm>
 
 #include "ppapi/c/dev/ppb_fullscreen_dev.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_core.h"
 #include "ppapi/c/ppp_instance.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"
 #include "ppapi/proxy/ppb_url_loader_proxy.h"
 
-using ppapi::HostResource;
-
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 namespace {
 
 PP_Bool DidCreate(PP_Instance instance,
                   uint32_t argc,
                   const char* argn[],
                   const char* argv[]) {
   std::vector<std::string> argn_vect;
   std::vector<std::string> argv_vect;
@@ skipping 188 matching lines @@
   // This balances the one reference that TrackPluginResource() initialized it
   // with. The plugin will normally take an additional reference which will keep
   // the resource alive in the plugin (and the one reference in the renderer
   // representing all plugin references).
   // Once all references at the plugin side are released, the renderer side will
   // be notified and release the reference added in HandleDocumentLoad() above.
   PluginResourceTracker::GetInstance()->ReleaseResource(plugin_loader);
 }
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi