ChromeOS OOBE: Fix language and keyboard md-select look.

chrome/browser/resources/chromeos/login/oobe_welcome.html

Index: chrome/browser/resources/chromeos/login/oobe_welcome.html
diff --git a/chrome/browser/resources/chromeos/login/oobe_welcome.html b/chrome/browser/resources/chromeos/login/oobe_welcome.html
index 8396e15a7e077bdfa769e3fe5c932b1a11ace080..34d39e4e3173a2187cc4c8091b1101df8448995e 100644
--- a/chrome/browser/resources/chromeos/login/oobe_welcome.html
+++ b/chrome/browser/resources/chromeos/login/oobe_welcome.html
@@ -104,7 +104,8 @@
       <div class="footer layout vertical">
         <template is="dom-if" if="[[enabled]]">
           <div id="languageDropdownContainer"
-              class="flex layout horizontal justified language-selection-entry">
+              class="flex layout center horizontal justified
+                  language-selection-entry">
             <div class="language-selection-title layout vertical center-justified"
                 i18n-content="languageDropdownTitle">
             </div>
@@ -115,7 +116,8 @@
             </oobe-i18n-dropdown>
           </div>
           <div id="keyboardDropdownContainer"
-              class="flex layout horizontal justified language-selection-entry">
+              class="flex layout center horizontal justified
+                 language-selection-entry">
             <div class="language-selection-title layout vertical center-justified"
                 i18n-content="keyboardDropdownTitle">
             </div>
@@ -210,7 +212,8 @@
         <h1 class="title" i18n-content="timezoneSectionTitle"></h1>
       </div>
       <div class="footer layout vertical">
-        <div class="flex layout horizontal justified timezone-selection-entry">
+        <div class="flex layout center horizontal justified
+              timezone-selection-entry">
           <div class="timezone-selection-title layout vertical center-justified"
               i18n-content="timezoneDropdownTitle">
           </div>