Remove runtime flags for Proxy and Reflect

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 2971 matching lines @@
   CHECK(!name.IsEmpty());
   foo->PrototypeTemplate()->Set(name, v8::FunctionTemplate::New(isolate));
   v8::Local<v8::Object> new_instance =
       foo->InstanceTemplate()->NewInstance(env.local()).ToLocalChecked();
   CHECK(!new_instance.IsEmpty());
   CHECK(new_instance->Has(env.local(), name).FromJust());
 }
 
 
 THREADED_TEST(PrivatePropertiesOnProxies) {
-  i::FLAG_harmony_proxies = true;
   LocalContext env;
   v8::Isolate* isolate = env->GetIsolate();
   v8::HandleScope scope(isolate);
 
   v8::Local<v8::Object> target = CompileRun("({})").As<v8::Object>();
   v8::Local<v8::Object> handler = CompileRun("({})").As<v8::Object>();
 
   v8::Local<v8::Proxy> proxy =
       v8::Proxy::New(env.local(), target, handler).ToLocalChecked();
 
@@ skipping 21826 matching lines @@
     auto values2 = Local<Function>::Cast(
         object2->Get(env2.local(), v8_str("values")).ToLocalChecked());
     auto fn2 = i::Handle<i::JSFunction>::cast(v8::Utils::OpenHandle(*values2));
     auto ctx2 = v8::Utils::OpenHandle(*env2.local());
     CHECK_EQ(fn2->GetCreationContext(), *ctx2);
   }
 }
 
 
 TEST(Proxy) {
-  i::FLAG_harmony_proxies = true;
   LocalContext context;
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope scope(isolate);
   v8::Local<v8::Object> target = CompileRun("({})").As<v8::Object>();
   v8::Local<v8::Object> handler = CompileRun("({})").As<v8::Object>();
 
   v8::Local<v8::Proxy> proxy =
       v8::Proxy::New(context.local(), target, handler).ToLocalChecked();
   CHECK(proxy->IsProxy());
   CHECK(!target->IsProxy());
@@ skipping 38 matching lines @@
                     .FromJust());
   }
 
   // Case 2: Js source file.
   {
     v8::MaybeLocal<v8::Script> script =
         v8::Script::Compile(context.local(), v8_str(source), &source_script);
     CHECK(script.IsEmpty());
   }
 }