Do not stop profiling if all finished profiles were deleted

src/cpu-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 158 matching lines @@
 
 void CpuProfiler::DeleteAllProfiles() {
   if (is_profiling_) StopProcessor();
   ResetProfiles();
 }
 
 
 void CpuProfiler::DeleteProfile(CpuProfile* profile) {
   profiles_->RemoveProfile(profile);
   delete profile;
+  if (profiles_->profiles()->is_empty() && !is_profiling_) {
+    // If this was the last profile, clean up all accessory data as well.
+    ResetProfiles();
+  }
 }
 
 
 static bool FilterOutCodeCreateEvent(Logger::LogEventsAndTags tag) {
   return FLAG_prof_browser_mode
       && (tag != Logger::CALLBACK_TAG
           && tag != Logger::FUNCTION_TAG
           && tag != Logger::LAZY_COMPILE_TAG
           && tag != Logger::REG_EXP_TAG
           && tag != Logger::SCRIPT_TAG);
@@ skipping 324 matching lines @@
     ReportBuiltinEventRecord* rec = &evt_rec.ReportBuiltinEventRecord_;
     Builtins::Name id = static_cast<Builtins::Name>(i);
     rec->start = builtins->builtin(id)->address();
     rec->builtin_id = id;
     processor_->Enqueue(evt_rec);
   }
 }
 
 
 } }  // namespace v8::internal