[Password Manager] Disable saving and filling on sync signup

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 "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/password_manager/password_manager_util.h"
 #include "chrome/browser/password_manager/password_store_factory.h"
 #include "chrome/browser/password_manager/save_password_infobar_delegate.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/profile_sync_service.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/manage_passwords_ui_controller.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
+#include "chrome/common/url_constants.h"
 #include "components/autofill/content/common/autofill_messages.h"
 #include "components/autofill/core/browser/password_generator.h"
 #include "components/autofill/core/common/password_form.h"
 #include "components/password_manager/content/browser/password_manager_internals_service_factory.h"
 #include "components/password_manager/core/browser/log_receiver.h"
 #include "components/password_manager/core/browser/password_form_manager.h"
 #include "components/password_manager/core/browser/password_manager.h"
 #include "components/password_manager/core/browser/password_manager_internals_service.h"
 #include "components/password_manager/core/browser/password_manager_metrics_util.h"
 #include "components/password_manager/core/common/password_manager_switches.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 
 #if defined(OS_ANDROID)
 #include "chrome/browser/android/password_authentication_manager.h"
 #endif  // OS_ANDROID
 
 using password_manager::PasswordManagerInternalsService;
 using password_manager::PasswordManagerInternalsServiceFactory;
 
@@ skipping 33 matching lines @@
     service->UnregisterClient(this);
 }
 
 bool ChromePasswordManagerClient::IsAutomaticPasswordSavingEnabled() const {
   return CommandLine::ForCurrentProcess()->HasSwitch(
              password_manager::switches::kEnableAutomaticPasswordSaving) &&
          chrome::VersionInfo::GetChannel() ==
              chrome::VersionInfo::CHANNEL_UNKNOWN;
 }
 
+bool ChromePasswordManagerClient::IsPasswordManagerEnabledForCurrentPage()
+    const {
+  if (EnabledForSyncSignin())
+    return true;
+
+  DCHECK(web_contents());
+  content::NavigationEntry* entry =
+      web_contents()->GetController().GetLastCommittedEntry();
+  if (!entry) {
+    // TODO(gcasto): Determine if fix for crbug.com/388246 is relevant here.
+    return true;
+  }
+  // Do not fill nor save password when a user is signing in for sync. This
+  // is because users need to remember their password if they are syncing as
+  // this is effectively their master password.
+  return entry->GetURL().host() != chrome::kChromeUIChromeSigninHost;
+}
+
 void ChromePasswordManagerClient::PromptUserToSavePassword(
     password_manager::PasswordFormManager* form_to_save) {
   if (IsTheHotNewBubbleUIEnabled()) {
     ManagePasswordsUIController* manage_passwords_ui_controller =
         ManagePasswordsUIController::FromWebContents(web_contents());
     manage_passwords_ui_controller->OnPasswordSubmitted(form_to_save);
   } else {
     std::string uma_histogram_suffix(
         password_manager::metrics_util::GroupIdToString(
             password_manager::metrics_util::MonitoredDomainGroupId(
@@ skipping 232 matching lines @@
 
   if (command_line->HasSwitch(switches::kEnableSavePasswordBubble))
     return true;
 
   std::string group_name =
       base::FieldTrialList::FindFullName("PasswordManagerUI");
 
   // The bubble should be the default case that runs on the bots.
   return group_name != "Infobar";
 }
+
+bool ChromePasswordManagerClient::EnabledForSyncSignin() {
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(
+          password_manager::switches::kDisableManagerForSyncSignin))
+    return false;
+
+  if (command_line->HasSwitch(
+          password_manager::switches::kEnableManagerForSyncSignin))
+    return true;
+
+  // Default is enabled.
+  std::string group_name =
+      base::FieldTrialList::FindFullName("PasswordManagerStateForSyncSignin");
+  return group_name != "Disabled";
+}