Add root types and thread id to root visiting.

Enables us to pass the root type and thread id to hprof.

Bug: 12680863
Change-Id: I6a0f1f9e3aa8f9b4033d695818ae7ca3460d67cb
diff --git a/runtime/mirror/stack_trace_element.cc b/runtime/mirror/stack_trace_element.cc
index a7ebe07..2e33198 100644
--- a/runtime/mirror/stack_trace_element.cc
+++ b/runtime/mirror/stack_trace_element.cc
@@ -58,9 +58,10 @@
   return trace;
 }
 
-void StackTraceElement::VisitRoots(RootVisitor* visitor, void* arg) {
+void StackTraceElement::VisitRoots(RootCallback* callback, void* arg) {
   if (java_lang_StackTraceElement_ != nullptr) {
-    java_lang_StackTraceElement_ = down_cast<Class*>(visitor(java_lang_StackTraceElement_, arg));
+    java_lang_StackTraceElement_ = down_cast<Class*>(
+        callback(java_lang_StackTraceElement_, arg, 0, kRootStickyClass));
   }
 }