Add a new globals object for PPAPI tracking information.

ppapi/proxy/ppb_url_loader_proxy.cc

Index: ppapi/proxy/ppb_url_loader_proxy.cc
diff --git a/ppapi/proxy/ppb_url_loader_proxy.cc b/ppapi/proxy/ppb_url_loader_proxy.cc
index 70c01e8b15592de338f50d09d6820f757d18e683..2ad302576b85e285e2476479fe70100daab1597f 100644
--- a/ppapi/proxy/ppb_url_loader_proxy.cc
+++ b/ppapi/proxy/ppb_url_loader_proxy.cc
@@ -172,7 +172,7 @@ URLLoader::~URLLoader() {
   }
 
   if (response_info_)
-    PluginResourceTracker::GetInstance()->ReleaseResource(response_info_);
+    PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(response_info_);
 }
 
 PPB_URLLoader_API* URLLoader::AsPPB_URLLoader_API() {
@@ -240,7 +240,7 @@ PP_Resource URLLoader::GetResponseInfo() {
   }
 
   // The caller expects to get a ref, and we want to keep holding ours.
-  PluginResourceTracker::GetInstance()->AddRefResource(response_info_);
+  PpapiGlobals::Get()->GetResourceTracker()->AddRefResource(response_info_);
   return response_info_;
 }