Use MDCTypography instead of MDFRobotoFontLoader directly.

ios/chrome/browser/ui/bookmarks/bookmark_promo_cell.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/ui/bookmarks/bookmark_promo_cell.h"
 
 #import <QuartzCore/QuartzCore.h>
 
 #include "base/logging.h"
 
 #import "ios/chrome/browser/ui/bookmarks/bookmark_utils_ios.h"
 #import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
 #import "ios/chrome/browser/ui/rtl_geometry.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "ios/chrome/grit/ios_chromium_strings.h"
 #include "ios/chrome/grit/ios_strings.h"
 #import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
-#import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
+#import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
 #import "ui/base/l10n/l10n_util_mac.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 
 const CGFloat kPadding = 16;
 const CGFloat kButtonHeight = 36;
@@ skipping 40 matching lines @@
 - (instancetype)initWithFrame:(CGRect)frame {
   self = [super initWithFrame:frame];
   if (self) {
     self.backgroundColor = [UIColor whiteColor];
     self.accessibilityIdentifier = @"promo_view";
 
     // The title.
     UILabel* titleLabel = [[UILabel alloc] init];
     _titleLabel = titleLabel;
     _titleLabel.textColor = bookmark_utils_ios::darkTextColor();
-    _titleLabel.font =
-        [[MDFRobotoFontLoader sharedInstance] mediumFontOfSize:16];
+    _titleLabel.font = [[MDCTypography fontLoader] mediumFontOfSize:16];
     _titleLabel.numberOfLines = 0;
     SetTextWithLineHeight(_titleLabel,
                           l10n_util::GetNSString(IDS_IOS_BOOKMARK_PROMO_TITLE),
                           20.f);
     _titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
     [self addSubview:_titleLabel];
 
     // The subtitle.
     UILabel* subtitleLabel = [[UILabel alloc] init];
     _subtitleLabel = subtitleLabel;
     _subtitleLabel.textColor = bookmark_utils_ios::darkTextColor();
-    _subtitleLabel.font =
-        [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:14];
+    _subtitleLabel.font = [MDCTypography body1Font];

[sdefresne, 2017/05/30 09:23:36]

Why change some calls like "[[MDFRobotoFontLoader sharedInstance]
regularFontOfSize:14];" to "[MDCTypography body1Font];" and leave others like
"[[MDFRobotoFontLoader sharedInstance] mediumFontOfSize:16];" to
"[[MDCTypography fontLoader] mediumFontOfSize:16];"?

I'd prefer if this CL was just a mechanical change from "[MDFRobotoFontLoader
sharedInstance]" to "[MDCTypography fontLoader]" if possible without introducing
semantic changes at the same time. WDYT?

Note: this comments applies here but also to all other locations where similar
changes are made.

     _subtitleLabel.numberOfLines = 0;
     SetTextWithLineHeight(
         _subtitleLabel, l10n_util::GetNSString(IDS_IOS_BOOKMARK_PROMO_MESSAGE),
         20.f);
     _subtitleLabel.translatesAutoresizingMaskIntoConstraints = NO;
     [self addSubview:_subtitleLabel];
 
     // The sign-in button.
     MDCFlatButton* signInButton = [[MDCFlatButton alloc] init];
     _signInButton = signInButton;
@@ skipping 184 matching lines @@
 
 - (void)signIn:(id)sender {
   [self.delegate bookmarkPromoCellDidTapSignIn:self];
 }
 
 - (void)dismiss:(id)sender {
   [self.delegate bookmarkPromoCellDidTapDismiss:self];
 }
 
 @end