Implement A/B experiment for anti-DDoS.

chrome/common/pref_names.cc

 // Copyright (c) 2011 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/common/pref_names.h"
 
 namespace prefs {
 
 // *************** PROFILE PREFS ***************
 // These are attached to the user profile
@@ skipping 673 matching lines @@
 const char kEnableTranslate[] = "translate.enabled";
 
 // Boolean that is true when the bookmark bar for the new tab page is enabled.
 const char kEnableBookmarkBar[] = "bookmark_bar.enabled";
 
 const char kPinnedTabs[] = "pinned_tabs";
 
 // Boolean that is true when HTTP throttling is enabled.
 const char kHttpThrottlingEnabled[] = "http_throttling.enabled";
 
+// Boolean that is true until the user changes the setting of the check-box
+// that controls whether HTTP throttling is enabled. When this is false,
+// we do not allow FieldTrial experiments to modify whether the feature
+// is enabled or not.
+const char kHttpThrottlingMayExperiment[] = "http_throttling.may_experiment";
+
 // Integer containing the default Geolocation content setting.
 const char kGeolocationDefaultContentSetting[] =
     "geolocation.default_content_setting";
 
 // Dictionary that maps [frame, toplevel] to their Geolocation content setting.
 const char kGeolocationContentSettings[] = "geolocation.content_settings";
 
 // Preference to disable 3D APIs (WebGL, Pepper 3D).
 const char kDisable3DAPIs[] = "disable_3d_apis";
 
@@ skipping 668 matching lines @@
 // Whether user-specified handlers for protocols and content types can be
 // specified.
 const char kCustomHandlersEnabled[] = "custom_handlers.enabled";
 
 // Integers that specify the policy refresh rate for device- and user-policy in
 // milliseconds. Not all values are meaningful, so it is clamped to a sane range
 // by the cloud policy subsystem.
 const char kDevicePolicyRefreshRate[] = "policy.device_refresh_rate";
 const char kUserPolicyRefreshRate[] = "policy.user_refresh_rate";
 }  // namespace prefs