Fix focus visibility and style for GAIA Back and Close buttons

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

Index: chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.html
diff --git a/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.html b/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.html
index 98f3dba612fb4debb4454420596f68ddab7877ce..2f26d9937ff99ecb63fc140a4f41f786f5975cbe 100644
--- a/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.html
+++ b/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.html
@@ -3,8 +3,6 @@
      found in the LICENSE file. -->
 
 <div id="oauth-enrollment" class="step no-logo hidden" hidden>
-  <div id="oauth-enroll-cancel-button" class="custom-gaia-button"></div>
-  <div id="oauth-enroll-back-button" class="custom-gaia-button" hidden></div>
   <div id="oauth-enroll-step-contents">
     <div id="oauth-enroll-step-signin">
       <div id="oauth-enroll-auth-view-container"></div>
@@ -79,4 +77,10 @@
     <span id="oauth-saml-notice-message"></span>
   </div>
   <div id="oauth-enrollment-controls" class="step-controls"></div>
+  <button id="oauth-enroll-back-button"
+      class="custom-appearance custom-gaia-button" hidden
+      i18n-values="aria-label:backButton" tabindex="0"></button>
+  <button id="oauth-enroll-cancel-button"
+      class="custom-appearance custom-gaia-button"
+      i18n-values="aria-label:closeButton" tabindex="0"></button>

[Greg Levin, 2015/05/06 00:23:57]

Moved down here to place buttons after other GAIA elements in TAB order (same as
in screen_gaia_signin.html).

 </div>