[Gin] Change the Ignition experiment to test Ignition+TurboFan.

gin/gin_features.cc

 // Copyright 2016 The Chromium 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 "gin/public/gin_features.h"
 
 namespace features {
 
-// Enables or disables the V8 Ignition interpreter.
-const base::Feature kV8Ignition {
-  "V8Ignition", base::FEATURE_DISABLED_BY_DEFAULT
+// Enables or disables the future compiler pipeline of V8, with the Ignition
+// interpreter and TurboFan compiler.
+const base::Feature kV8Future {
+  "V8Future", base::FEATURE_DISABLED_BY_DEFAULT
 };
 
 // Enables or disables the V8 Ignition interpreter on low end
 // Android devices.
 const base::Feature kV8IgnitionLowEnd {
   "V8IgnitionLowEnd", base::FEATURE_ENABLED_BY_DEFAULT
 };
 
 }  // namespace features