Add a new globals object for PPAPI tracking information.

ppapi/thunk/enter.h

Index: ppapi/thunk/enter.h
diff --git a/ppapi/thunk/enter.h b/ppapi/thunk/enter.h
index 34fb706a5ba30c913aec660179b03f54ab38036e..faa556d9a2754326797a4246ab52b4bb7f91031a 100644
--- a/ppapi/thunk/enter.h
+++ b/ppapi/thunk/enter.h
@@ -9,10 +9,11 @@
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/proxy/interface_id.h"
 #include "ppapi/shared_impl/function_group_base.h"
+#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 #include "ppapi/shared_impl/resource.h"
-#include "ppapi/shared_impl/tracker_base.h"
 #include "ppapi/shared_impl/resource_tracker.h"
+#include "ppapi/shared_impl/tracker_base.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
@@ -116,7 +117,7 @@ class EnterFunctionGivenResource : public EnterFunction<FunctionsT> {
  private:
   static PP_Instance GetInstanceForResource(PP_Resource resource) {
     Resource* object =
-        TrackerBase::Get()->GetResourceTracker()->GetResource(resource);
+        PpapiGlobals::Get()->GetResourceTracker()->GetResource(resource);
     return object ? object->pp_instance() : 0;
   }
 };
@@ -128,7 +129,8 @@ class EnterResource : subtle::LockOnEntry<lock_on_entry> {
  public:
   EnterResource(PP_Resource resource, bool report_error)
       : object_(NULL) {
-    resource_ = TrackerBase::Get()->GetResourceTracker()->GetResource(resource);
+    resource_ =
+        PpapiGlobals::Get()->GetResourceTracker()->GetResource(resource);
     if (resource_)
       object_ = resource_->GetAs<ResourceT>();
     // TODO(brettw) check error and if report_error is set, do something.