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

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 07351c9aab150fb42e9c20d33192cd0700e448ee..58f8a7a3ac5e07926c55f55ca0e80aeda57f7181 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -8420,6 +8420,12 @@ int CpuProfile::GetSamplesCount() const {
   return reinterpret_cast<const i::CpuProfile*>(this)->samples_count();
 }
 
+CpuProfiler* CpuProfiler::New(Isolate* isolate) {
+  return reinterpret_cast<CpuProfiler*>(
+      new i::CpuProfiler(reinterpret_cast<i::Isolate*>(isolate)));
+}
+
+void CpuProfiler::Dispose() { delete reinterpret_cast<i::CpuProfiler*>(this); }
 
 void CpuProfiler::SetSamplingInterval(int us) {
   DCHECK_GE(us, 0);