Introduce v8::CpuProfiler::New and v8::CpuProfiler::Dispose API.

test/cctest/profiler-extension.h

Index: test/cctest/profiler-extension.h
diff --git a/test/cctest/profiler-extension.h b/test/cctest/profiler-extension.h
index 00f9a5a8085fe62c40f0f31202c69fef2efb5852..dbc12f47a002dc39a6f2d48a254089a4cfba7e11 100644
--- a/test/cctest/profiler-extension.h
+++ b/test/cctest/profiler-extension.h
@@ -35,11 +35,20 @@
 namespace v8 {
 namespace internal {
 
+class CpuProfiler;
+
 class ProfilerExtension : public v8::Extension {
  public:
   ProfilerExtension() : v8::Extension("v8/profiler", kSource) { }
+
   virtual v8::Local<v8::FunctionTemplate> GetNativeFunctionTemplate(
       v8::Isolate* isolate, v8::Local<v8::String> name);
+
+  static void set_profiler(v8::CpuProfiler* profiler) { profiler_ = profiler; }
+  static void set_profiler(CpuProfiler* profiler) {
+    profiler_ = reinterpret_cast<v8::CpuProfiler*>(profiler);
+  }
+  static v8::CpuProfiler* profiler() { return profiler_; }
   static v8::CpuProfile* last_profile;
 
  private:
@@ -47,6 +56,7 @@ class ProfilerExtension : public v8::Extension {
   static void StopProfiling(const v8::FunctionCallbackInfo<v8::Value>& args);
   static void CollectSample(const v8::FunctionCallbackInfo<v8::Value>& args);
 
+  static v8::CpuProfiler* profiler_;
   static const char* kSource;
 };