[MDC roll] Roll Material Components to a0c6b4d6bbade404fb51a654c0c6529422e2c477

TBR=smut

Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Ib3b548aba9a038183326a31085f6729ef867d92e
Reviewed-on: https://chromium-review.googlesource.com/1024820
Commit-Queue: iOS Autoroller <ios-autoroller@chromium.org>
Reviewed-by: iOS Autoroller <ios-autoroller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553128}

DEPS

@@ -260,7 +260,7 @@ deps = {
   },
 
   'src/ios/third_party/material_components_ios/src': {
-      'url': Var('chromium_git') + '/external/github.com/material-components/material-components-ios.git' + '@' + '284ab1e81578ac8b24bf75fece695d306978ae59',
+      'url': Var('chromium_git') + '/external/github.com/material-components/material-components-ios.git' + '@' + 'a0c6b4d6bbade404fb51a654c0c6529422e2c477',
       'condition': 'checkout_ios',
   },
 

ios/third_party/material_components_ios/README.chromium

 Name: Material Components for iOS
 URL: https://github.com/material-components/material-components-ios
 Version: 0
-Revision: 284ab1e81578ac8b24bf75fece695d306978ae59
+Revision: a0c6b4d6bbade404fb51a654c0c6529422e2c477
 License: Apache 2.0
 License File: LICENSE
 Security Critical: yes