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

ios/chrome/browser/autofill/form_input_accessory_view.mm

 // Copyright 2014 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_input_accessory_view.h"
 
 #import <QuartzCore/QuartzCore.h>
 
 #include "base/i18n/rtl.h"
-#include "base/ios/weak_nsobject.h"
-#include "base/mac/scoped_nsobject.h"
+#include "base/logging.h"
 #import "ios/chrome/browser/autofill/form_input_accessory_view_delegate.h"
 #import "ios/chrome/browser/ui/image_util.h"
 #include "ios/chrome/browser/ui/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 alpha value of the background color.
 const CGFloat kBackgroundColorAlpha = 1.0;
 
 // Horizontal margin around the custom view.
 const CGFloat kCustomViewHorizontalMargin = 2;
 
 // The width of the previous and next buttons.
 const CGFloat kNavigationButtonWidth = 44;
@@ skipping 62 matching lines @@
 + (void)addImageViewWithImageName:(NSString*)imageName
                           originX:(CGFloat)originX
                           originY:(CGFloat)originY
                             width:(CGFloat)width
                            inView:(UIView*)view;
 
 @end
 
 @implementation FormInputAccessoryView {
   // The custom view that is displayed in the input accessory view.
-  base::scoped_nsobject<UIView> _customView;
+  UIView* _customView;
 
   // Delegate of this view.
-  base::WeakNSProtocol<id<FormInputAccessoryViewDelegate>> _delegate;
+  __weak id<FormInputAccessoryViewDelegate> _delegate;
 }
 
 - (instancetype)initWithFrame:(CGRect)frame
                      delegate:(id<FormInputAccessoryViewDelegate>)delegate
                    customView:(UIView*)customView
                     leftFrame:(CGRect)leftFrame
                    rightFrame:(CGRect)rightFrame {
   DCHECK(delegate);
   self = [super initWithFrame:frame];
   if (self) {
-    _delegate.reset(delegate);
-    _customView.reset([customView retain]);
+    _delegate = delegate;
+    _customView = customView;
     [self initializeViewWithCustomView:_customView
                              leftFrame:leftFrame
                             rightFrame:rightFrame];
   }
   return self;
 }
 
 - (instancetype)initWithFrame:(CGRect)frame customView:(UIView*)customView {
   self = [super initWithFrame:frame];
   if (self) {
-    _customView.reset([customView retain]);
+    _customView = nil;

[Justin Donnelly, 2017/06/13 20:08:05]

Shouldn't this be _customView = customView; ?

[marq (ping after 24h), 2017/06/14 12:06:13]

It should have been, yes. But it looks like it doesn't matter, since the
argument |customView| is added as a subview, and nothing else after object init
cares about the _customView ivar (as far as I could tell).

So: fixed, but maybe someone should just get rid of the ivar.

     customView.frame =
         CGRectMake(0, 0, CGRectGetWidth(frame), CGRectGetHeight(frame));
     [self addSubview:customView];
 
     [[self class] addBackgroundImageInView:self
                              withImageName:@"autofill_keyboard_background"];
   }
   return self;
 }
 
 #pragma mark -
 #pragma mark UIInputViewAudioFeedback
 
 - (BOOL)enableInputClicksWhenVisible {
   return YES;
 }
 
 #pragma mark -
 #pragma mark Private Methods
 
 - (void)initializeViewWithCustomView:(UIView*)customView
                            leftFrame:(CGRect)leftFrame
                           rightFrame:(CGRect)rightFrame {
-  UIView* customViewContainer = [[[UIView alloc] init] autorelease];
+  UIView* customViewContainer = [[UIView alloc] init];
   [self addSubview:customViewContainer];
-  UIView* navView = [[[UIView alloc] init] autorelease];
+  UIView* navView = [[UIView alloc] init];
   [self addSubview:navView];
 
   bool splitKeyboard = CGRectGetWidth(rightFrame) != 0;
   BOOL isRTL = base::i18n::IsRTL();
 
   // The computed frame for |customView|.
   CGRect customViewFrame;
   // Frame of a subview of |navView| in which navigation buttons will be shown.
   CGRect navFrame = CGRectZero;
   if (splitKeyboard) {
@@ skipping 63 matching lines @@
   [customViewContainer addSubview:customView];
   [navView addSubview:[self viewForNavigationButtonsInFrame:navFrame]];
 }
 
 UIImage* ButtonImage(NSString* name) {
   UIImage* rawImage = [UIImage imageNamed:name];
   return StretchableImageFromUIImage(rawImage, 1, 0);
 }
 
 - (UIView*)viewForNavigationButtonsInFrame:(CGRect)frame {
-  UIView* navView = [[[UIView alloc] initWithFrame:frame] autorelease];
+  UIView* navView = [[UIView alloc] initWithFrame:frame];
 
   BOOL isRTL = base::i18n::IsRTL();
 
   // Vertical space is left for a dividing line.
   CGFloat firstRow = 1;
 
   CGFloat currentX = 0;
 
   // Navigation view is at the right side if not RTL. Add a left separator in
   // this case.
@@ skipping 120 matching lines @@
                 action:action
       forControlEvents:UIControlEventTouchUpInside];
   return button;
 }
 
 + (void)addBackgroundImageInView:(UIView*)view
                    withImageName:(NSString*)imageName {
   UIImage* backgroundImage = StretchableImageNamed(imageName);
 
   UIImageView* backgroundImageView =
-      [[[UIImageView alloc] initWithFrame:view.bounds] autorelease];
+      [[UIImageView alloc] initWithFrame:view.bounds];
   [backgroundImageView setImage:backgroundImage];
   [backgroundImageView setAlpha:kBackgroundColorAlpha];
   [view addSubview:backgroundImageView];
   [view sendSubviewToBack:backgroundImageView];
 }
 
 + (void)addImageViewWithImageName:(NSString*)imageName
                           originX:(CGFloat)originX
                           originY:(CGFloat)originY
                             width:(CGFloat)width
                            inView:(UIView*)view {
   UIImage* image =
       StretchableImageFromUIImage([UIImage imageNamed:imageName], 0, 0);
-  base::scoped_nsobject<UIImageView> imageView(
-      [[UIImageView alloc] initWithImage:image]);
+  UIImageView* imageView = [[UIImageView alloc] initWithImage:image];
   [imageView setFrame:CGRectMake(originX, originY, width,
                                  CGRectGetHeight(view.bounds) - originY)];
   [view addSubview:imageView];
 }
 
 @end