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

ios/chrome/browser/autofill/form_suggestion_label.mm

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/autofill/form_suggestion_label.h"
 
 #import <QuartzCore/QuartzCore.h>
 #include <stddef.h>
 
 #include <cmath>
 
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/autofill/core/browser/credit_card.h"
 #import "components/autofill/ios/browser/form_suggestion.h"
 #import "ios/chrome/browser/autofill/form_suggestion_view_client.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 // The button corner radius.
 const CGFloat kCornerRadius = 2.0f;
 
 // Font size of button titles.
 const CGFloat kIpadFontSize = 15.0f;
 const CGFloat kIphoneFontSize = 14.0f;
 
 // The alpha values of the suggestion's main and description labels.
@@ skipping 24 matching lines @@
     {autofill::kVisaCard, @"autofill_card_visa"},
     {autofill::kDinersCard, @"autofill_card_diners"},
     {autofill::kGenericCard, @"autofill_card_generic"},
     {autofill::kJCBCard, @"autofill_card_jcb"},
     {autofill::kUnionPay, @"autofill_card_unionpay"},
 };
 
 // Creates a label with the given |text| and |alpha| suitable for use in a
 // suggestion button in the keyboard accessory view.
 UILabel* TextLabel(NSString* text, CGFloat alpha, BOOL bold) {
-  base::scoped_nsobject<UILabel> label([[UILabel alloc] init]);
+  UILabel* label = [[UILabel alloc] init];
   [label setText:text];
   CGFloat fontSize = IsIPadIdiom() ? kIpadFontSize : kIphoneFontSize;
   UIFont* font = bold ? [UIFont boldSystemFontOfSize:fontSize]
                       : [UIFont systemFontOfSize:fontSize];
   [label setFont:font];
   [label setTextColor:[UIColor colorWithWhite:0.0f alpha:alpha]];
   [label setBackgroundColor:[UIColor clearColor]];
   [label sizeToFit];
-  return label.autorelease();
+  return label;
 }
 
 }  // namespace
 
 @interface FormSuggestionLabel ()
 
 // Returns the name of the image for credit card icon.
 + (NSString*)imageNameForCreditCardIcon:(NSString*)icon;
 @end
 
 @implementation FormSuggestionLabel {
   // Client of this view.
-  base::WeakNSProtocol<id<FormSuggestionViewClient>> client_;
-  base::scoped_nsobject<FormSuggestion> suggestion_;
+  __weak id<FormSuggestionViewClient> client_;
+  FormSuggestion* suggestion_;
 }
 
 - (id)initWithSuggestion:(FormSuggestion*)suggestion
            proposedFrame:(CGRect)proposedFrame
                    index:(NSUInteger)index
           numSuggestions:(NSUInteger)numSuggestions
                   client:(id<FormSuggestionViewClient>)client {
   // TODO(jimblackler): implement sizeThatFits: and layoutSubviews, and perform
   // layout in those methods instead of in the designated initializer.
   self = [super initWithFrame:CGRectZero];
   if (self) {
-    suggestion_.reset([suggestion retain]);
-    client_.reset(client);
+    suggestion_ = suggestion;
+    client_ = client;
 
     const CGFloat frameHeight = CGRectGetHeight(proposedFrame);
     CGFloat currentX = kBorderWidth;
 
     // [UIImage imageNamed:] writes error message if nil is passed. Prevent
     // console spam by checking the name first.
     NSString* iconImageName =
         [FormSuggestionLabel imageNameForCreditCardIcon:suggestion.icon];
     UIImage* iconImage = nil;
     if (iconImageName)
       iconImage = [UIImage imageNamed:iconImageName];
     if (iconImage) {
-      UIImageView* iconView =
-          [[[UIImageView alloc] initWithImage:iconImage] autorelease];
+      UIImageView* iconView = [[UIImageView alloc] initWithImage:iconImage];
       const CGFloat iconY =
           std::floor((frameHeight - iconImage.size.height) / 2.0f);
       iconView.frame = CGRectMake(currentX, iconY, iconImage.size.width,
                                   iconImage.size.height);
       [self addSubview:iconView];
       currentX += CGRectGetWidth(iconView.frame) + kSpacing;
     }
 
     UILabel* label = TextLabel(suggestion.value, kMainLabelAlpha, YES);
     const CGFloat labelY =
@@ skipping 69 matching lines @@
   std::string iconName(base::SysNSStringToUTF8(icon));
   for (size_t i = 0; i < arraysize(kCreditCardIconImageMap); ++i) {
     if (iconName.compare(kCreditCardIconImageMap[i].icon_name) == 0) {
       return kCreditCardIconImageMap[i].image_name;
     }
   }
   return nil;
 }
 
 @end