Stop prerendering of a site if it uses the Credential Manager API.

chrome/browser/password_manager/chrome_password_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 "chrome/browser/password_manager/chrome_password_manager_client.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_macros.h"
 #include "build/build_config.h"
 #include "chrome/browser/browsing_data/browsing_data_helper.h"
 #include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/browser/password_manager/password_store_factory.h"
+#include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/ui/autofill/password_generation_popup_controller_impl.h"
 #include "chrome/browser/ui/passwords/passwords_client_ui_delegate.h"
 #include "chrome/common/channel_info.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/features.h"
 #include "chrome/common/url_constants.h"
 #include "components/autofill/content/browser/content_autofill_driver.h"
@@ skipping 175 matching lines @@
          IsFillingEnabledForCurrentPage();
 }
 
 bool ChromePasswordManagerClient::IsFillingEnabledForCurrentPage() const {
   return (!password_manager::IsSettingsBehaviorChangeActive() ||
           *saving_and_filling_passwords_enabled_) &&
          !DidLastPageLoadEncounterSSLErrors() &&
          IsPasswordManagementEnabledForCurrentPage();
 }
 
+bool ChromePasswordManagerClient::OnCredentialManagerUsed() {
+  prerender::PrerenderContents* prerender_contents =
+      prerender::PrerenderContents::FromWebContents(web_contents());
+  if (prerender_contents) {
+    prerender_contents->Destroy(prerender::FINAL_STATUS_CREDENTIAL_MANAGER_API);
+    return false;
+  }
+  return true;
+}
+
 bool ChromePasswordManagerClient::PromptUserToSaveOrUpdatePassword(
     std::unique_ptr<password_manager::PasswordFormManager> form_to_save,
     password_manager::CredentialSourceType type,
     bool update_password) {
   // Save password infobar and the password bubble prompts in case of
   // "webby" URLs and do not prompt in case of "non-webby" URLS (e.g. file://).
   if (!BrowsingDataHelper::IsWebScheme(
       web_contents()->GetLastCommittedURL().scheme())) {
     return false;
   }
@@ skipping 383 matching lines @@
       ChromePasswordManagerClient::FromWebContents(web_contents);
 
   // Try to bind to the driver, but if driver is not available for this render
   // frame host, the request will be just dropped. This will cause the message
   // pipe to be closed, which will raise a connection error on the peer side.
   if (!instance)
     return;
 
   instance->credential_manager_impl_.BindRequest(std::move(request));
 }