Fix cctest/test-cpu-profiler/CollectCpuProfile test on Arm and MIPS simulators

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 537828c26b0a51f019c28a65e5ff610e01b4c8b3..cd6ee4756976ba8502117bdc0168168a5f513805 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -371,6 +371,12 @@ Isolate::PerIsolateThreadData*
 
 Isolate::PerIsolateThreadData* Isolate::FindPerThreadDataForThisThread() {
   ThreadId thread_id = ThreadId::Current();
+  return FindPerThreadDataForThread(thread_id);
+}
+
+
+Isolate::PerIsolateThreadData* Isolate::FindPerThreadDataForThread(
+    ThreadId thread_id) {
   PerIsolateThreadData* per_thread = NULL;
   {
     ScopedLock lock(process_wide_mutex_);