Use MDCTypography instead of MDFRobotoFontLoader directly.

ios/chrome/browser/ui/authentication/chrome_signin_view_controller.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.
 
 #include "ios/chrome/browser/ui/authentication/chrome_signin_view_controller.h"
 
 #include <stdint.h>
 #include <cmath>
 #include <memory>
 
@@ skipping 35 matching lines @@
 #include "ios/chrome/common/string_util.h"
 #include "ios/chrome/grit/ios_chromium_strings.h"
 #include "ios/chrome/grit/ios_strings.h"
 #import "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #import "ios/public/provider/chrome/browser/signin/chrome_identity.h"
 #import "ios/public/provider/chrome/browser/signin/chrome_identity_interaction_manager.h"
 #import "ios/public/provider/chrome/browser/signin/chrome_identity_service.h"
 #import "ios/third_party/material_components_ios/src/components/ActivityIndicator/src/MaterialActivityIndicator.h"
 #import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
 #import "ios/third_party/material_components_ios/src/components/Palettes/src/MaterialPalettes.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.h"
 
 namespace {
 
 // Default animation duration.
 const CGFloat kAnimationDuration = 0.5f;
 
 enum LayoutType {
   LAYOUT_REGULAR,
   LAYOUT_COMPACT,
@@ skipping 766 matching lines @@
                                      constants.GradientHeight)];
   [_gradientLayer setFrame:[_gradientView bounds]];
 
   // Layout the activity indicator in the center of the view.
   CGRect bounds = self.view.bounds;
   [_activityIndicator
       setCenter:CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds))];
 }
 
 - (void)layoutButtons:(const AuthenticationViewConstants&)constants {
-  [_primaryButton titleLabel].font = [[MDFRobotoFontLoader sharedInstance]
-      mediumFontOfSize:constants.SecondaryFontSize];
-  [_secondaryButton titleLabel].font = [[MDFRobotoFontLoader sharedInstance]
-      mediumFontOfSize:constants.SecondaryFontSize];
+  [_primaryButton titleLabel].font =
+      [[MDCTypography fontLoader] mediumFontOfSize:constants.SecondaryFontSize];
+  [_secondaryButton titleLabel].font =
+      [[MDCTypography fontLoader] mediumFontOfSize:constants.SecondaryFontSize];
 
   LayoutRect primaryButtonLayout = LayoutRectZero;
   primaryButtonLayout.boundingWidth = CGRectGetWidth(self.view.bounds);
   primaryButtonLayout.size = [_primaryButton
       sizeThatFits:CGSizeMake(CGFLOAT_MAX, constants.ButtonHeight)];
   primaryButtonLayout.position.leading = primaryButtonLayout.boundingWidth -
                                          primaryButtonLayout.size.width -
                                          constants.ButtonHorizontalPadding;
   primaryButtonLayout.position.originY = CGRectGetHeight(self.view.bounds) -
                                          constants.ButtonVerticalPadding -
@@ skipping 85 matching lines @@
   }
   _hasConfirmationScreenReachedBottom = YES;
   [self setPrimaryButtonStyling:_primaryButton];
   [_primaryButton setTitle:[self acceptSigninButtonTitle]
                   forState:UIControlStateNormal];
   [_primaryButton setImage:nil forState:UIControlStateNormal];
   [self.view setNeedsLayout];
 }
 
 @end