[ObjC ARC] Converts ios/chrome/browser/ui/ntp:ntp_internal to ARC.

ios/chrome/browser/ui/ntp/most_visited_cell.mm

Index: ios/chrome/browser/ui/ntp/most_visited_cell.mm
diff --git a/ios/chrome/browser/ui/ntp/most_visited_cell.mm b/ios/chrome/browser/ui/ntp/most_visited_cell.mm
index c4bde1184dcb1a67664acd0a60c898ad24c6874b..ae4187eeef0eb8908788ae847afd80f326de9b1a 100644
--- a/ios/chrome/browser/ui/ntp/most_visited_cell.mm
+++ b/ios/chrome/browser/ui/ntp/most_visited_cell.mm
@@ -6,9 +6,7 @@
 
 #include <memory>
 
-#import "base/ios/weak_nsobject.h"
 #include "base/mac/bind_objc_block.h"
-#import "base/mac/scoped_nsobject.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/task/cancelable_task_tracker.h"
@@ -29,6 +27,10 @@
 #import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
 #include "skia/ext/skia_utils_ios.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 const CGFloat kFaviconSize = 48;
 const CGFloat kFaviconMinSize = 32;
 const CGFloat kImageViewBackgroundColor = 0.941;
@@ -42,13 +44,13 @@ const CGFloat kMaximumHeight = 100;
   // Backs property with the same name.
   GURL _URL;
   // Weak reference to the relevant GoogleLandingDataSource.
-  base::WeakNSProtocol<id<GoogleLandingDataSource>> _dataSource;
+  __weak id<GoogleLandingDataSource> _dataSource;
   // Backs property with the same name.
   ntp_tiles::TileVisualType _tileType;
 
-  base::scoped_nsobject<UILabel> _label;
-  base::scoped_nsobject<UILabel> _noIconLabel;
-  base::scoped_nsobject<UIImageView> _imageView;
+  UILabel* _label;
+  UILabel* _noIconLabel;
+  UIImageView* _imageView;
   // Used to cancel tasks for the LargeIconService.
   base::CancelableTaskTracker _cancelable_task_tracker;
 }
@@ -71,7 +73,7 @@ const CGFloat kMaximumHeight = 100;
   if (!self) {
     return nil;
   }
-  _label.reset([[UILabel alloc] initWithFrame:CGRectZero]);
+  _label = [[UILabel alloc] initWithFrame:CGRectZero];
   [_label setTextColor:[UIColor colorWithWhite:kLabelTextColor alpha:1.0]];
   [_label setBackgroundColor:[UIColor clearColor]];
   [_label setFont:[MDCTypography captionFont]];
@@ -80,12 +82,12 @@ const CGFloat kMaximumHeight = 100;
   [_label setPreferredMaxLayoutWidth:maxSize.width];
   [_label setNumberOfLines:kLabelNumLines];
 
-  _noIconLabel.reset([[UILabel alloc] initWithFrame:CGRectZero]);
+  _noIconLabel = [[UILabel alloc] initWithFrame:CGRectZero];
   [_noIconLabel setBackgroundColor:[UIColor clearColor]];
   [_noIconLabel setFont:[MDCTypography headlineFont]];
   [_noIconLabel setTextAlignment:NSTextAlignmentCenter];
 
-  _imageView.reset([[UIImageView alloc] initWithFrame:CGRectZero]);
+  _imageView = [[UIImageView alloc] initWithFrame:CGRectZero];
   [_imageView layer].cornerRadius = kImageViewCornerRadius;
   [_imageView setClipsToBounds:YES];
   [self addSubview:_imageView];
@@ -146,15 +148,15 @@ const CGFloat kMaximumHeight = 100;
 - (void)setupWithURL:(GURL)URL
                title:(NSString*)title
           dataSource:(id<GoogleLandingDataSource>)dataSource {
-  _dataSource.reset(dataSource);
+  _dataSource = dataSource;
   _tileType = ntp_tiles::TileVisualType::NONE;
   [self setText:title];
   [self setURL:URL];
-  base::WeakNSObject<MostVisitedCell> weakSelf(self);
+  __weak MostVisitedCell* weakSelf = self;
 
   void (^faviconBlock)(const favicon_base::LargeIconResult&) =
       ^(const favicon_base::LargeIconResult& result) {
-        base::scoped_nsobject<MostVisitedCell> strongSelf([weakSelf retain]);
+        MostVisitedCell* strongSelf = weakSelf;
         if (!strongSelf)
           return;
 
@@ -181,7 +183,7 @@ const CGFloat kMaximumHeight = 100;
 
         if (result.bitmap.is_valid() || result.fallback_icon_style) {
           LargeIconCache* largeIconCache =
-              [strongSelf.get()->_dataSource largeIconCache];
+              [strongSelf->_dataSource largeIconCache];
           if (largeIconCache)
             largeIconCache->SetCachedResult(URL, result);
         }
@@ -200,7 +202,7 @@ const CGFloat kMaximumHeight = 100;
   CGFloat faviconSize = [UIScreen mainScreen].scale * kFaviconSize;
   CGFloat faviconMinSize = [UIScreen mainScreen].scale * kFaviconMinSize;
   large_icon_service->GetLargeIconOrFallbackStyle(
-      URL, faviconMinSize, faviconSize, base::BindBlock(faviconBlock),
+      URL, faviconMinSize, faviconSize, base::BindBlockArc(faviconBlock),
       &_cancelable_task_tracker);
 }