[Password Manager] Add experiment controlling sync credential saving behavior

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 481 matching lines @@
     switches::kRememberCertErrorDecisions,
     "604800" },
   { IDS_REMEMBER_CERTIFICATE_ERROR_DECISION_CHOICE_ONE_MONTH,
     switches::kRememberCertErrorDecisions,
     "2592000" },
   { IDS_REMEMBER_CERTIFICATE_ERROR_DECISION_CHOICE_THREE_MONTHS,
     switches::kRememberCertErrorDecisions,
     "7776000" },
 };
 
+const Experiment::Choice kEnableDropSyncCredentialChoices[] = {
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", ""},
+  { IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
+    password_manager::switches::kEnableDropSyncCredential, "" },
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
+    password_manager::switches::kDisableDropSyncCredential, "" },
+};
+
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the experiment is the internal name. If you'd like to
 // gather statistics about the usage of your flag, you should append a marker
 // comment to the end of the feature name, like so:
 //   "my-special-feature",  // FLAGS:RECORD_UMA
 //
 // After doing that, run
 //   tools/metrics/actions/extract_actions.py
 // to add the metric to actions.xml (which will enable UMA to record your
@@ skipping 1398 matching lines @@
     kOsDesktop,
     SINGLE_VALUE_TYPE(switches::kEnableWebsiteSettingsManager)
   },
   {
     "remember-cert-error-decisions",
     IDS_FLAGS_REMEMBER_CERTIFICATE_ERROR_DECISIONS_NAME,
     IDS_FLAGS_REMEMBER_CERTIFICATE_ERROR_DECISIONS_DESCRIPTION,
     kOsAll,
     MULTI_VALUE_TYPE(kRememberCertificateErrorDecisionsChoices)
   },
+  {
+    "enable-drop-sync-credential",
+    IDS_FLAGS_ENABLE_DROP_SYNC_CREDENTIAL_NAME,
+    IDS_FLAGS_ENABLE_DROP_SYNC_CREDENTIAL_DESCRIPTION,
+    kOsAll,
+    MULTI_VALUE_TYPE(kEnableDropSyncCredentialChoices)
+  }
 };
 
 const Experiment* experiments = kExperiments;
 size_t num_experiments = arraysize(kExperiments);
 
 // Stores and encapsulates the little state that about:flags has.
 class FlagsState {
  public:
   FlagsState() : needs_restart_(false) {}
   void ConvertFlagsToSwitches(FlagsStorage* flags_storage,
@@ skipping 508 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags