[ObjC ARC] Converts ios/public/provider/chrome/browser/signin:signin to ARC.

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

Review-Url: https://codereview.chromium.org/2964383002
Cr-Commit-Position: refs/heads/master@{#485999}

ios/public/provider/chrome/browser/signin/BUILD.gn

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

ios/public/provider/chrome/browser/signin/chrome_identity.h

@@ -14,19 +14,19 @@
 
 // Identity/account email address. This can be shown to the user, but is not a
 // unique identifier (@see gaiaID).
-@property(nonatomic, readonly) NSString* userEmail;
+@property(strong, nonatomic, readonly) NSString* userEmail;
 
 // The unique GAIA user identifier for this identity/account.
 // You may use this as a unique identifier to remember a particular identity.
-@property(nonatomic, readonly) NSString* gaiaID;
+@property(strong, nonatomic, readonly) NSString* gaiaID;
 
 // Returns the full name of the identity.
 // Could be nil if no full name has been fetched for this account yet.
-@property(nonatomic, readonly) NSString* userFullName;
+@property(strong, nonatomic, readonly) NSString* userFullName;
 
 // Cached Hashed Gaia ID. This is used to pass the currently signed in account
 // between apps.
-@property(nonatomic, readonly) NSString* hashedGaiaID;
+@property(strong, nonatomic, readonly) NSString* hashedGaiaID;
 
 @end
 

ios/public/provider/chrome/browser/signin/chrome_identity.mm

@@ -6,6 +6,10 @@
 
 #include "base/logging.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 @implementation ChromeIdentity
 
 - (NSString*)userEmail {

ios/public/provider/chrome/browser/signin/chrome_identity_interaction_manager.h

@@ -30,7 +30,7 @@ typedef void (^SigninCompletionCallback)(ChromeIdentity* identity,
 @interface ChromeIdentityInteractionManager : NSObject
 
 // Delegate used to present and dismiss the view controllers.
-@property(nonatomic, assign) id<ChromeIdentityInteractionManagerDelegate>
+@property(nonatomic, weak) id<ChromeIdentityInteractionManagerDelegate>
     delegate;
 
 // Whether the manager is currently being canceled. Delegates may inquire if the

ios/public/provider/chrome/browser/signin/chrome_identity_interaction_manager.mm

@@ -4,23 +4,14 @@
 
 #import "ios/public/provider/chrome/browser/signin/chrome_identity_interaction_manager.h"
 
-#import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 
-@interface ChromeIdentityInteractionManager () {
-  base::WeakNSProtocol<id<ChromeIdentityInteractionManagerDelegate>> _delegate;
-}
-@end
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
 
 @implementation ChromeIdentityInteractionManager
-
-- (id<ChromeIdentityInteractionManagerDelegate>)delegate {
-  return _delegate;
-}
-
-- (void)setDelegate:(id<ChromeIdentityInteractionManagerDelegate>)delegate {
-  _delegate.reset(delegate);
-}
+@synthesize delegate = _delegate;
 
 - (BOOL)isCanceling {
   return NO;

ios/public/provider/chrome/browser/signin/chrome_identity_service.mm

@@ -6,6 +6,10 @@
 
 #include "ios/public/provider/chrome/browser/signin/chrome_identity_interaction_manager.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace ios {
 
 ChromeIdentityService::ChromeIdentityService() {}

ios/public/provider/chrome/browser/signin/signin_error_provider.mm

@@ -4,6 +4,10 @@
 
 #include "ios/public/provider/chrome/browser/signin/signin_error_provider.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace ios {
 
 SigninErrorProvider::SigninErrorProvider() {}

ios/public/provider/chrome/browser/signin/signin_resources_provider.mm

@@ -6,6 +6,10 @@
 
 #include <MacTypes.h>
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace ios {
 
 SigninResourcesProvider::SigninResourcesProvider() {