Nuke WebPassOwnPtr<T> and replace it with std::unique_ptr<T>.

components/test_runner/mock_credential_manager_client.cc

 // 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 "components/test_runner/mock_credential_manager_client.h"
 
+#include <memory>
+#include <utility>
+
 #include "third_party/WebKit/public/platform/WebCredential.h"
-#include "third_party/WebKit/public/platform/WebPassOwnPtr.h"
 
 namespace test_runner {
 
 MockCredentialManagerClient::MockCredentialManagerClient()
     : error_(blink::WebCredentialManagerNoError) {}
 
 MockCredentialManagerClient::~MockCredentialManagerClient() {
 }
 
 void MockCredentialManagerClient::SetResponse(
@@ skipping 26 matching lines @@
 }
 
 void MockCredentialManagerClient::dispatchGet(
     bool zero_click_only,
     bool include_passwords,
     const blink::WebVector<blink::WebURL>& federations,
     RequestCallbacks* callbacks) {
   if (error_ != blink::WebCredentialManagerNoError)
     callbacks->onError(error_);
   else
-    callbacks->onSuccess(adoptWebPtr(credential_.release()));
+    callbacks->onSuccess(std::move(credential_));
   delete callbacks;
 }
 
 }  // namespace test_runner