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

test/cctest/test-api.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 78 matching lines @@
   TEST(Name##WithProfiler) {                                         \
     RunWithProfiler(&Test##Name);                                    \
   }                                                                  \
   THREADED_TEST(Name)
 
 
 void RunWithProfiler(void (*test)()) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
   v8::Local<v8::String> profile_name = v8_str("my_profile1");
-  v8::CpuProfiler* cpu_profiler = env->GetIsolate()->GetCpuProfiler();
-
+  v8::CpuProfiler* cpu_profiler = v8::CpuProfiler::New(env->GetIsolate());
   cpu_profiler->StartProfiling(profile_name);
   (*test)();
   reinterpret_cast<i::CpuProfiler*>(cpu_profiler)->DeleteAllProfiles();
+  cpu_profiler->Dispose();
 }
 
 
 static int signature_callback_count;
 static Local<Value> signature_expected_receiver;
 static void IncrementingSignatureCallback(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   ApiTestFuzzer::Fuzz();
   signature_callback_count++;
   CHECK(signature_expected_receiver->Equals(
@@ skipping 25256 matching lines @@
   CHECK(object->SetPrototype(context.local(), v8::Null(isolate)).IsNothing());
 
   // The original prototype is still there
   Local<Value> new_proto =
       object->Get(context.local(), v8_str("__proto__")).ToLocalChecked();
   CHECK(new_proto->IsObject());
   CHECK(new_proto.As<v8::Object>()
             ->Equals(context.local(), original_proto)
             .FromJust());
 }