Add a unified resource tracker shared between the proxy and the impl.

ppapi/proxy/ppapi_proxy_test.cc

Index: ppapi/proxy/ppapi_proxy_test.cc
diff --git a/ppapi/proxy/ppapi_proxy_test.cc b/ppapi/proxy/ppapi_proxy_test.cc
index eb7b440c273d273b7ed202542d577443c95b780f..80493307786ed30837e1da9244f9cdd9449cba76 100644
--- a/ppapi/proxy/ppapi_proxy_test.cc
+++ b/ppapi/proxy/ppapi_proxy_test.cc
@@ -147,6 +147,7 @@ Dispatcher* PluginProxyTestHarness::GetDispatcher() {
 
 void PluginProxyTestHarness::SetUpHarness() {
   // These must be first since the dispatcher set-up uses them.
+  resource_tracker_.DidCreateInstance(pp_instance());
   PluginResourceTracker::SetInstanceForTest(&resource_tracker_);
   resource_tracker_.set_var_tracker_test_override(&var_tracker_);
 
@@ -163,6 +164,7 @@ void PluginProxyTestHarness::SetUpHarnessWithChannel(
     base::WaitableEvent* shutdown_event,
     bool is_client) {
   // These must be first since the dispatcher set-up uses them.
+  resource_tracker_.DidCreateInstance(pp_instance());
   PluginResourceTracker::SetInstanceForTest(&resource_tracker_);
   resource_tracker_.set_var_tracker_test_override(&var_tracker_);
   plugin_delegate_mock_.Init(ipc_message_loop, shutdown_event);
@@ -180,6 +182,7 @@ void PluginProxyTestHarness::TearDownHarness() {
   plugin_dispatcher_->DidDestroyInstance(pp_instance());
   plugin_dispatcher_.reset();
 
+  resource_tracker_.DidDeleteInstance(pp_instance());
   PluginResourceTracker::SetInstanceForTest(NULL);
 }