Add a new globals object for PPAPI tracking information.

ppapi/shared_impl/url_util_impl.cc

Index: ppapi/shared_impl/url_util_impl.cc
===================================================================
--- ppapi/shared_impl/url_util_impl.cc	(revision 106515)
+++ ppapi/shared_impl/url_util_impl.cc	(working copy)
@@ -5,6 +5,7 @@
 #include "ppapi/shared_impl/url_util_impl.h"
 
 #include "googleurl/src/gurl.h"
+#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/tracker_base.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/shared_impl/var_tracker.h"
@@ -106,7 +107,7 @@
     return url;
 
   PP_Var result = Canonicalize(url, components);
-  TrackerBase::Get()->GetVarTracker()->ReleaseVar(url);
+  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(url);
   return result;
 }