Remove dependencies of V8 on cpu-profiler is_profiling.

test/cctest/test-api.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/isolate.h"
-#include "src/profiler/cpu-profiler.h"
 #include "src/vm-state.h"
 #include "test/cctest/cctest.h"
 
 template <typename T>
 static void CheckReturnValue(const T& t, i::Address callback) {
   v8::ReturnValue<v8::Value> rv = t.GetReturnValue();
   i::Object** o = *reinterpret_cast<i::Object***>(&rv);
   CHECK_EQ(CcTest::isolate(), t.GetIsolate());
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(t.GetIsolate());
   CHECK_EQ(t.GetIsolate(), rv.GetIsolate());
   CHECK((*o)->IsTheHole(isolate) || (*o)->IsUndefined(isolate));
   // Verify reset
   bool is_runtime = (*o)->IsTheHole(isolate);
   if (is_runtime) {
     CHECK(rv.Get()->IsUndefined());
   } else {
     i::Handle<i::Object> v = v8::Utils::OpenHandle(*rv.Get());
     CHECK_EQ(*v, *o);
   }
   rv.Set(true);
   CHECK(!(*o)->IsTheHole(isolate) && !(*o)->IsUndefined(isolate));
   rv.Set(v8::Local<v8::Object>());
   CHECK((*o)->IsTheHole(isolate) || (*o)->IsUndefined(isolate));
   CHECK_EQ(is_runtime, (*o)->IsTheHole());
   // If CPU profiler is active check that when API callback is invoked
   // VMState is set to EXTERNAL.
-  if (isolate->cpu_profiler()->is_profiling()) {
+  if (isolate->is_profiling()) {
     CHECK_EQ(v8::EXTERNAL, isolate->current_vm_state());
     CHECK(isolate->external_callback_scope());
     CHECK_EQ(callback, isolate->external_callback_scope()->callback());
   }
 }