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

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

Index: ios/chrome/browser/ui/autofill/autofill_client_ios.h
diff --git a/ios/chrome/browser/ui/autofill/autofill_client_ios.h b/ios/chrome/browser/ui/autofill/autofill_client_ios.h
index 20c1f91b91f71a17e97407404a3309d4008c0e45..6c2dc0dc77d9d6fa8382c0fb8a4b6245f7251e1b 100644
--- a/ios/chrome/browser/ui/autofill/autofill_client_ios.h
+++ b/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_;

[rohitrao (ping after 24h), 2016/12/06 20:19:50]

This header is included by both ARC and non-ARC sources.  The non-ARC includers
are complaining "cannot create __weak reference in file using manual reference
counting".

   password_manager::PasswordGenerationManager* password_generation_manager_;
   std::unique_ptr<IdentityProvider> identity_provider_;
   CardUnmaskPromptControllerImpl unmask_controller_;