[ObjC ARC] Converts ios/chrome/browser/ui/autofill:autofill to ARC.

Automatically generated ARCMigrate commit
Notable issues:None
BUG=624363
TEST=None

Review-Url: https://codereview.chromium.org/2569713003
Cr-Commit-Position: refs/heads/master@{#438167}

ios/chrome/browser/ui/autofill/BUILD.gn

@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 source_set("autofill") {
+  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "autofill_client_ios.h",
     "autofill_client_ios.mm",

ios/chrome/browser/ui/autofill/autofill_client_ios.h

@@ -96,7 +96,7 @@ class AutofillClientIOS : public AutofillClient {
  private:
   ios::ChromeBrowserState* browser_state_;
   infobars::InfoBarManager* infobar_manager_;
-  id<AutofillClientIOSBridge> bridge_;  // Weak
+  __weak id<AutofillClientIOSBridge> bridge_;
   password_manager::PasswordGenerationManager* password_generation_manager_;
   std::unique_ptr<IdentityProvider> identity_provider_;
   CardUnmaskPromptControllerImpl unmask_controller_;

ios/chrome/browser/ui/autofill/autofill_client_ios.mm

@@ -6,7 +6,6 @@
 
 #include <utility>
 
-#include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "components/autofill/core/browser/autofill_credit_card_filling_infobar_delegate_mobile.h"
 #include "components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.h"
@@ -27,6 +26,10 @@
 #include "ios/chrome/browser/web_data_service_factory.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace autofill {
 
 AutofillClientIOS::AutofillClientIOS(

ios/chrome/browser/ui/autofill/autofill_save_card_infobar.mm

@@ -9,6 +9,10 @@
 #include "components/infobars/core/infobar.h"
 #include "ios/chrome/browser/infobars/infobar_utils.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace autofill {
 
 std::unique_ptr<infobars::InfoBar> CreateSaveCardInfoBarMobile(