Suggestions UI - favicon item

ios/chrome/browser/ui/suggestions/suggestions_favicon_internal_cell.mm

+// Copyright 2017 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/ui/suggestions/suggestions_favicon_internal_cell.h"
+
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
+#import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace {
+const CGFloat kFaviconImageSize = 50;
+}
+
+@implementation SuggestionsFaviconInternalCell
+
+@synthesize faviconView = _faviconView;
+@synthesize titleLabel = _titleLabel;
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  self = [super initWithFrame:frame];
+  if (self) {
+    _faviconView = [[UIImageView alloc] init];
+    _titleLabel = [[UILabel alloc] init];
+    _titleLabel.numberOfLines = 2;
+    _titleLabel.font = [[MDCTypography fontLoader] lightFontOfSize:10];

[marq (ping after 24h), 2017/01/19 16:20:26]

Either make this a constant or use a font size constant from a header (I think
we have those somewhere).

[gambard, 2017/01/19 17:37:32]

Done.

+    _titleLabel.textAlignment = NSTextAlignmentCenter;
+
+    _faviconView.translatesAutoresizingMaskIntoConstraints = NO;
+    _titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
+    [self.contentView addSubview:_faviconView];
+    [self.contentView addSubview:_titleLabel];
+
+    ApplyVisualConstraints(
+        @[ @"V:|-[image]-[title]-|" ],
+        @{ @"image" : _faviconView,
+           @"title" : _titleLabel });
+
+    [NSLayoutConstraint activateConstraints:@[
+      [_faviconView.centerXAnchor
+          constraintEqualToAnchor:self.contentView.centerXAnchor],
+      [_titleLabel.leadingAnchor
+          constraintEqualToAnchor:self.contentView.leadingAnchor],
+      [_titleLabel.trailingAnchor
+          constraintEqualToAnchor:self.contentView.trailingAnchor],
+      [_faviconView.widthAnchor constraintEqualToConstant:kFaviconImageSize],
+      [_faviconView.heightAnchor
+          constraintEqualToAnchor:_faviconView.widthAnchor],
+    ]];
+  }
+  return self;
+}
+
+- (void)prepareForReuse {

[marq (ping after 24h), 2017/01/19 16:20:25]

nit: #pragma mark - UICollectionReusableView

[gambard, 2017/01/19 17:37:32]

Done.

+  [super prepareForReuse];
+  self.faviconView.image = nil;
+  self.titleLabel.text = nil;
+}
+
++ (NSString*)reuseIdentifier {
+  return @"faviconInternalCell";
+}
+
+@end