Removed RuntimeProfilerRateLimiter class and RuntimeProfiler::IsSomeIsolateInJS.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index ac2e554f85e5112b1a1d72efb0dfe7047eb20969..2ffe66994ca919761c0d91c886e9459a49c341ae 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -1015,7 +1015,6 @@ class Isolate {
         RuntimeProfiler::IsolateEnteredJS(this);
       } else if (current_state == JS && state != JS) {
         // JS -> non-JS transition.
-        ASSERT(RuntimeProfiler::IsSomeIsolateInJS());
         RuntimeProfiler::IsolateExitedJS(this);
       } else {
         // Other types of state transitions are not interesting to the