Add a new globals object for PPAPI tracking information.

ppapi/proxy/plugin_var_serialization_rules.cc

Index: ppapi/proxy/plugin_var_serialization_rules.cc
===================================================================
--- ppapi/proxy/plugin_var_serialization_rules.cc	(revision 106515)
+++ ppapi/proxy/plugin_var_serialization_rules.cc	(working copy)
@@ -6,15 +6,17 @@
 
 #include "base/logging.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
+#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/var.h"
 
 namespace ppapi {
 namespace proxy {
 
 PluginVarSerializationRules::PluginVarSerializationRules()
-    : var_tracker_(&PluginResourceTracker::GetInstance()->var_tracker()) {
+    : var_tracker_(PluginGlobals::Get()->plugin_var_tracker()) {
 }
 
 PluginVarSerializationRules::~PluginVarSerializationRules() {