Fix debuggersupport=off build.

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 209 matching lines @@
   sampler_window_[sampler_window_position_] = function;
   sampler_window_weight_[sampler_window_position_] = weight;
   sampler_window_position_ = (sampler_window_position_ + 1) &
       (kSamplerWindowSize - 1);
 }
 
 
 void RuntimeProfiler::OptimizeNow() {
   HandleScope scope(isolate_);
 
+  if (isolate_->DebuggerHasBreakPoints()) return;
+
   if (FLAG_parallel_recompilation) {
     // Take this as opportunity to process the optimizing compiler thread's
     // output queue so that it does not unnecessarily keep objects alive.
     isolate_->optimizing_compiler_thread()->InstallOptimizedFunctions();
   }
 
   // Run through the JavaScript frames and collect them. If we already
   // have a sample of the function, we mark it for optimizations
   // (eagerly or lazily).
   JSFunction* samples[kSamplerFrameCount];
@@ skipping 199 matching lines @@
 
 
 void RuntimeProfiler::UpdateSamplesAfterCompact(ObjectVisitor* visitor) {
   for (int i = 0; i < kSamplerWindowSize; i++) {
     visitor->VisitPointer(&sampler_window_[i]);
   }
 }
 
 
 } }  // namespace v8::internal