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

ppapi/proxy/ppp_instance_proxy_test.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 "base/synchronization/waitable_event.h"
 #include "ipc/ipc_message_utils.h"
 #include "ppapi/c/dev/ppb_fullscreen_dev.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_core.h"
 #include "ppapi/c/ppb_url_loader.h"
 #include "ppapi/c/ppp_instance.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/ppapi_proxy_test.h"
 
-namespace pp {
+namespace ppapi {
 namespace proxy {
 
 namespace {
 // This is a poor man's mock of PPP_Instance using global variables.  Eventually
 // we should generalize making PPAPI interface mocks by using IDL or macro/
 // template magic.
 PP_Instance received_instance;
 uint32_t received_argc;
 std::vector<std::string> received_argn;
 std::vector<std::string> received_argv;
@@ skipping 148 matching lines @@
   EXPECT_EQ(received_instance, expected_instance);
   EXPECT_EQ(received_has_focus, expected_has_focus);
 
   //  TODO(dmichael): Need to mock out a resource Tracker to be able to test
   //                  HandleResourceLoad. It also requires
   //                  PPB_Core.AddRefResource and for PPB_URLLoader to be
   //                  registered.
 }
 
 }  // namespace proxy
-}  // namespace pp
+}  // namespace ppapi