Removed RuntimeProfilerRateLimiter class and RuntimeProfiler::IsSomeIsolateInJS.

src/runtime-profiler.cc

Index: src/runtime-profiler.cc
diff --git a/src/runtime-profiler.cc b/src/runtime-profiler.cc
index 262cd1d582de28735d0458249eddd3d70743dd2d..94a56509077320cfd83756d6c4e7e01e808f00fa 100644
--- a/src/runtime-profiler.cc
+++ b/src/runtime-profiler.cc
@@ -430,11 +430,6 @@ void RuntimeProfiler::HandleWakeUp(Isolate* isolate) {
 }
 
 
-bool RuntimeProfiler::IsSomeIsolateInJS() {
-  return NoBarrier_Load(&state_) > 0;
-}
-
-
 bool RuntimeProfiler::WaitForSomeIsolateToEnterJS() {
   Atomic32 old_state = NoBarrier_CompareAndSwap(&state_, 0, -1);
   ASSERT(old_state >= -1);
@@ -484,12 +479,4 @@ void RuntimeProfiler::UpdateSamplesAfterCompact(ObjectVisitor* visitor) {
 }
 
 
-bool RuntimeProfilerRateLimiter::SuspendIfNecessary() {
-  if (!RuntimeProfiler::IsSomeIsolateInJS()) {
-    return RuntimeProfiler::WaitForSomeIsolateToEnterJS();
-  }
-  return false;
-}
-
-
 } }  // namespace v8::internal