Measure usage of only CredentialRequestOptions.unmediated

third_party/WebKit/Source/modules/credentialmanager/CredentialsContainer.cpp

 // Copyright 2014 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 "modules/credentialmanager/CredentialsContainer.h"
 
 #include <memory>
 #include <utility>
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionState.h"
@@ skipping 163 matching lines @@
 
   ExecutionContext* context = ExecutionContext::From(script_state);
   // Set the default mediation option if none is provided.
   // If both 'unmediated' and 'mediation' are set log a warning if they are
   // contradicting.
   // Also sets 'mediation' appropriately when only 'unmediated' is set.
   // TODO(http://crbug.com/715077): Remove this when 'unmediated' is removed.
   String mediation = "optional";
   if (options.hasUnmediated() && !options.hasMediation()) {
     mediation = options.unmediated() ? "silent" : "optional";
+    UseCounter::Count(
+        context,
+        UseCounter::kCredentialManagerCredentialRequestOptionsOnlyUnmediated);
   } else if (options.hasMediation()) {
     mediation = options.mediation();
     if (options.hasUnmediated() &&
         ((options.unmediated() && options.mediation() != "silent") ||
          (!options.unmediated() && options.mediation() != "optional"))) {
       context->AddConsoleMessage(ConsoleMessage::Create(
           kJSMessageSource, kWarningMessageLevel,
           "mediation: '" + options.mediation() + "' overrides unmediated: " +
               (options.unmediated() ? "true" : "false") + "."));
     }
@@ skipping 86 matching lines @@
   ScriptPromise promise = resolver->Promise();
   if (!CheckBoilerplate(resolver))
     return promise;
 
   CredentialManagerClient::From(ExecutionContext::From(script_state))
       ->DispatchRequireUserMediation(new NotificationCallbacks(resolver));
   return promise;
 }
 
 }  // namespace blink