Relanding this with fixes to the mac dbg builder

ppapi/proxy/ppapi_proxy_test.cc

 // Copyright (c) 2012 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/ppapi_proxy_test.h"
 
 #include "base/bind.h"
 #include "base/message_loop_proxy.h"
 #include "base/observer_list.h"
 #include "ipc/ipc_sync_channel.h"
@@ skipping 194 matching lines @@
 
 uint32 PluginProxyTestHarness::PluginDelegateMock::Register(
     PluginDispatcher* plugin_dispatcher) {
   return 0;
 }
 
 void PluginProxyTestHarness::PluginDelegateMock::Unregister(
     uint32 plugin_dispatcher_id) {
 }
 
-ppapi::WebKitForwarding*
-PluginProxyTestHarness::PluginDelegateMock::GetWebKitForwarding() {
-  NOTREACHED();
-  return NULL;
-}
-
-void PluginProxyTestHarness::PluginDelegateMock::PostToWebKitThread(
-    const tracked_objects::Location& from_here, const base::Closure& task) {
-  NOTREACHED();
-}
-
 bool PluginProxyTestHarness::PluginDelegateMock::SendToBrowser(
     IPC::Message* msg) {
   NOTREACHED();
   return false;
 }
 
 void PluginProxyTestHarness::PluginDelegateMock::PreCacheFont(
     const void* logfontw) {
 }
 
@@ skipping 144 matching lines @@
   remote_harness_torn_down.Wait();
 
   local_harness_->TearDownHarness();
 
   io_thread_.Stop();
 }
 
 
 }  // namespace proxy
 }  // namespace ppapi