No need to start Ticker for Crankshaft

src/runtime-profiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 371 matching lines @@
     }
   }
 }
 
 
 void RuntimeProfiler::SetUp() {
   ASSERT(has_been_globally_set_up_);
   if (!FLAG_watch_ic_patching) {
     ClearSampleBuffer();
   }
-  // If the ticker hasn't already started, make sure to do so to get
-  // the ticks for the runtime profiler.
-  if (IsEnabled()) isolate_->logger()->EnsureTickerStarted();
 }
 
 
 void RuntimeProfiler::Reset() {
   if (!FLAG_watch_ic_patching) {
     sampler_threshold_ = kSamplerThresholdInit;
     sampler_threshold_size_factor_ = kSamplerThresholdSizeFactorInit;
     sampler_ticks_until_threshold_adjustment_ =
         kSamplerTicksBetweenThresholdAdjustment;
   }
@@ skipping 80 matching lines @@
 
 
 void RuntimeProfiler::UpdateSamplesAfterCompact(ObjectVisitor* visitor) {
   for (int i = 0; i < kSamplerWindowSize; i++) {
     visitor->VisitPointer(&sampler_window_[i]);
   }
 }
 
 
 } }  // namespace v8::internal