Fix stub_test to pass with SS collector.

Changed the test to access the allocation entrypoints from the thread.

Change the order roots are visited to prevent a rare error where the
java lang reflect art method would move before it was checked in
SanityCheckFrame.

Change-Id: Ifb96220f3fbb74ea5d720777f130450f04c0e044
diff --git a/runtime/stack.cc b/runtime/stack.cc
index 5e64e59..6667419 100644
--- a/runtime/stack.cc
+++ b/runtime/stack.cc
@@ -270,7 +270,7 @@
 void StackVisitor::SanityCheckFrame() const {
   if (kIsDebugBuild) {
     mirror::ArtMethod* method = GetMethod();
-    CHECK(method->GetClass() == mirror::ArtMethod::GetJavaLangReflectArtMethod());
+    CHECK_EQ(method->GetClass(), mirror::ArtMethod::GetJavaLangReflectArtMethod());
     if (cur_quick_frame_ != nullptr) {
       method->AssertPcIsWithinQuickCode(cur_quick_frame_pc_);
       // Frame sanity.