Use MDCTypography instead of MDFRobotoFontLoader directly.

ios/chrome/browser/ui/first_run/welcome_to_chrome_view.mm

 // Copyright 2015 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/first_run/welcome_to_chrome_view.h"
 
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #import "ios/chrome/browser/ui/UIView+SizeClassSupport.h"
 #include "ios/chrome/browser/ui/fancy_ui/primary_action_button.h"
 #include "ios/chrome/browser/ui/first_run/first_run_util.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #import "ios/chrome/browser/ui/util/CRUILabel+AttributeUtils.h"
 #import "ios/chrome/browser/ui/util/label_link_controller.h"
 #import "ios/chrome/browser/ui/util/label_observer.h"
 #include "ios/chrome/common/string_util.h"
 #include "ios/chrome/grit/ios_chromium_strings.h"
 #include "ios/chrome/grit/ios_strings.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"
 #include "ui/base/l10n/l10n_util.h"
 #include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 
 // Accessibility identifier for the checkbox button.
@@ skipping 446 matching lines @@
   [self configureContainerView];
   [self configureTitleLabel];
   [self configureImageView];
   [self configureTOSLabel];
   [self configureOptInLabel];
   [self configureOKButton];
   [self setNeedsLayout];
 }
 
 - (void)configureTitleLabel {
-  self.titleLabel.font = [[MDFRobotoFontLoader sharedInstance]
+  self.titleLabel.font = [[MDCTypography fontLoader]
       regularFontOfSize:kTitleLabelFontSize[self.cr_widthSizeClass]];
 }
 
 - (void)configureImageView {
   CGFloat sideLength = self.imageView.image.size.width;
   if (self.cr_widthSizeClass == COMPACT) {
     sideLength = self.bounds.size.width * kAppLogoProportionMultiplier;
   } else if (self.cr_heightSizeClass == COMPACT) {
     sideLength = self.bounds.size.height * kAppLogoProportionMultiplier;
   }
   self.imageView.bounds = AlignRectOriginAndSizeToPixels(
       CGRectMake(self.imageView.bounds.origin.x, self.imageView.bounds.origin.y,
                  sideLength, sideLength));
 }
 
 - (void)configureTOSLabel {
-  self.TOSLabel.font = [[MDFRobotoFontLoader sharedInstance]
+  self.TOSLabel.font = [[MDCTypography fontLoader]
       regularFontOfSize:kTOSLabelFontSize[self.cr_widthSizeClass]];
   self.TOSLabel.cr_lineHeight = kTOSLabelLineHeight[self.cr_widthSizeClass];
 }
 
 - (void)configureOptInLabel {
-  self.optInLabel.font = [[MDFRobotoFontLoader sharedInstance]
+  self.optInLabel.font = [[MDCTypography fontLoader]
       regularFontOfSize:kOptInLabelFontSize[self.cr_widthSizeClass]];
   self.optInLabel.cr_lineHeight = kOptInLabelLineHeight[self.cr_widthSizeClass];
 }
 
 - (void)configureContainerView {
   CGFloat containerViewWidth =
       self.cr_widthSizeClass == COMPACT
           ? kContainerViewCompactWidthPercentage * CGRectGetWidth(self.bounds)
           : kContainerViewRegularWidth;
   self.containerView.frame =
       CGRectMake(0.0, 0.0, containerViewWidth, CGFLOAT_MAX);
 }
 
 - (void)configureOKButton {
-  self.OKButton.titleLabel.font = [[MDFRobotoFontLoader sharedInstance]
+  self.OKButton.titleLabel.font = [[MDCTypography fontLoader]
       mediumFontOfSize:kOKButtonTitleLabelFontSize[self.cr_widthSizeClass]];
   CGSize size = [self.OKButton
       sizeThatFits:CGSizeMake(CGFLOAT_MAX,
                               kOKButtonHeight[self.cr_widthSizeClass])];
   [self.OKButton setBounds:CGRectMake(0, 0, size.width,
                                       kOKButtonHeight[self.cr_widthSizeClass])];
 }
 
 #pragma mark -
 
 - (void)checkBoxButtonWasTapped {
   self.checkBoxButton.selected = !self.checkBoxButton.selected;
   self.checkBoxButton.accessibilityValue =
       self.checkBoxButton.selected
           ? l10n_util::GetNSString(IDS_IOS_SETTING_ON)
           : l10n_util::GetNSString(IDS_IOS_SETTING_OFF);
 }
 
 - (void)OKButtonWasTapped {
   [self.delegate welcomeToChromeViewDidTapOKButton:self];
 }
 
 - (void)TOSLinkWasTapped {
   [self.delegate welcomeToChromeViewDidTapTOSLink:self];
 }
 
 @end