Make CPU profiler do not hog 100% of CPU.

src/optimizing-compile-dispatcher.cc

Index: src/optimizing-compile-dispatcher.cc
diff --git a/src/optimizing-compile-dispatcher.cc b/src/optimizing-compile-dispatcher.cc
index 491f52a2bb6c257b513b95391f09547273f59f61..a2f2970fc83299b27479b3f6c71262181cca3456 100644
--- a/src/optimizing-compile-dispatcher.cc
+++ b/src/optimizing-compile-dispatcher.cc
@@ -63,7 +63,8 @@ class OptimizingCompileDispatcher::CompileTask : public v8::Task {
       TimerEventScope<TimerEventRecompileConcurrent> timer(isolate_);
 
       if (dispatcher->recompilation_delay_ != 0) {
-        base::OS::Sleep(dispatcher->recompilation_delay_);
+        base::OS::Sleep(base::TimeDelta::FromMilliseconds(
+            dispatcher->recompilation_delay_));
       }
 
       dispatcher->CompileNext(dispatcher->NextInput(true));