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

ios/chrome/browser/autofill/form_input_accessory_view_controller.h

Index: ios/chrome/browser/autofill/form_input_accessory_view_controller.h
diff --git a/ios/chrome/browser/autofill/form_input_accessory_view_controller.h b/ios/chrome/browser/autofill/form_input_accessory_view_controller.h
index 7ab244a6df1808941d3dc9e5c9463c77a3d85066..9881f267cb4afb9a95e5e8c0bcf9186cbed84fc1 100644
--- a/ios/chrome/browser/autofill/form_input_accessory_view_controller.h
+++ b/ios/chrome/browser/autofill/form_input_accessory_view_controller.h
@@ -83,7 +83,7 @@ typedef void (^AccessoryViewReadyCompletion)(
 // The current web view proxy.
 // TODO(crbug.com/727716): This property should not be a part of the public
 // interface, it is used in tests as a backdoor.
-@property(nonatomic, readonly) id<CRWWebViewProxy> webViewProxy;
+@property(weak, nonatomic, readonly) id<CRWWebViewProxy> webViewProxy;

[stkhapugin, 2017/06/13 12:28:25]

I think it's more of a strong, as it's a getter that returns something owned by
the child that this owns. 

[marq (ping after 24h), 2017/06/13 12:36:33]

Done.

 
 // Initializes a new controller with the specified |providers| of input
 // accessory views.