Add a feature flag for enabling transparent doodle request.

chrome/browser/android/chrome_feature_list.cc

 // Copyright 2015 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 "chrome/browser/android/chrome_feature_list.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 46 matching lines @@
 };
 
 const base::Feature kNTPSnippetsFeature {
   "NTPSnippets", base::FEATURE_DISABLED_BY_DEFAULT
 };
 
 const base::Feature kNTPToolbarFeature {
   "NTPToolbar", base::FEATURE_ENABLED_BY_DEFAULT
 };
 
+const base::Feature kNTPTransparentDoodle {
+  "NTPTransparentDoodle", base::FEATURE_DISABLED_BY_DEFAULT
+};
+
 const base::Feature kNTPFakeOmniboxTextFeature {
   "NTPFakeOmniboxText", base::FEATURE_DISABLED_BY_DEFAULT
 };
 
 const base::Feature kPhysicalWebFeature {
   "PhysicalWeb", base::FEATURE_ENABLED_BY_DEFAULT
 };
 
 const base::Feature kSystemDownloadManager {
   "SystemDownloadManager", base::FEATURE_ENABLED_BY_DEFAULT
@@ skipping 11 matching lines @@
   NOTREACHED();
   return false;
 }
 
 bool RegisterChromeFeatureListJni(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android
 }  // namespace chrome