Migrate base::Bind to base::BindOnce.

The changelist modifies code locations where the caller explicitly
requires base::OnceCallback.

BUG=764795
TESTED=build

Change-Id: I1717303bbdbd42ce3cbe2c33a5db6031b9266d5e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2462858Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Commit-Queue: Tomasz Tylenda <ttylenda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816391}

chrome/browser/chromeos/arc/auth/arc_active_directory_enrollment_token_fetcher.cc

@@ -102,9 +102,9 @@ void ArcActiveDirectoryEnrollmentTokenFetcher::DoFetchEnrollmentToken() {
               ? url_loader_factory_for_testing()
               : g_browser_process->system_network_context_manager()
                     ->GetSharedURLLoaderFactory(),
-          base::Bind(&ArcActiveDirectoryEnrollmentTokenFetcher::
-                         OnEnrollmentTokenResponseReceived,
-                     weak_ptr_factory_.GetWeakPtr()));
+          base::BindOnce(&ArcActiveDirectoryEnrollmentTokenFetcher::
+                             OnEnrollmentTokenResponseReceived,
+                         weak_ptr_factory_.GetWeakPtr()));
 
   em::ActiveDirectoryEnrollPlayUserRequest* enroll_request =
       config->request()->mutable_active_directory_enroll_play_user_request();

chrome/browser/chromeos/arc/auth/arc_background_auth_code_fetcher.cc

@@ -74,8 +74,8 @@ ArcBackgroundAuthCodeFetcher::~ArcBackgroundAuthCodeFetcher() = default;
 void ArcBackgroundAuthCodeFetcher::Fetch(FetchCallback callback) {
   DCHECK(callback_.is_null());
   callback_ = std::move(callback);
-  context_.Prepare(base::Bind(&ArcBackgroundAuthCodeFetcher::OnPrepared,
-                              weak_ptr_factory_.GetWeakPtr()));
+  context_.Prepare(base::BindOnce(&ArcBackgroundAuthCodeFetcher::OnPrepared,
+                                  weak_ptr_factory_.GetWeakPtr()));
 }
 
 void ArcBackgroundAuthCodeFetcher::OnPrepared(bool success) {

chrome/browser/chromeos/arc/optin/arc_terms_of_service_default_negotiator_unittest.cc

@@ -174,7 +174,7 @@ std::ostream& operator<<(std::ostream& os, Status status) {
 
 ArcTermsOfServiceNegotiator::NegotiationCallback UpdateStatusCallback(
     Status* status) {
-  return base::Bind(
+  return base::BindOnce(
       [](Status* status, bool accepted) {
         *status = accepted ? Status::ACCEPTED : Status::CANCELLED;
       },