Refactor CpuProfiler.

src/log.cc

Index: src/log.cc
diff --git a/src/log.cc b/src/log.cc
index 040109535b247f2cf660b7f3e5646fef23afed89..199042b0f4c3c6bb4559786da4240a00ecc30395 100644
--- a/src/log.cc
+++ b/src/log.cc
@@ -22,6 +22,7 @@
 #include "src/macro-assembler.h"
 #include "src/perf-jit.h"
 #include "src/profiler/cpu-profiler-inl.h"
+#include "src/profiler/profiler-listener.h"
 #include "src/runtime-profiler.h"
 #include "src/string-stream.h"
 #include "src/vm-state-inl.h"
@@ -754,11 +755,13 @@ Logger::Logger(Isolate* isolate)
       perf_jit_logger_(NULL),
       ll_logger_(NULL),
       jit_logger_(NULL),
+      profiler_listener_(new ProfilerListener(isolate)),
       listeners_(5),
       is_initialized_(false) {}
 
 Logger::~Logger() {
   delete log_;
+  delete profiler_listener_;
 }
 
 void Logger::addCodeEventListener(CodeEventListener* listener) {