Update frame around SAML IdP pages to new GAIA style

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

 /* 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.
  */
 
 #oauth-enrollment {
   height: 609px;
   padding: 0;
   width: 522px;
 }
 
+#oauth-enrollment.saml {
+  height: 528px;
+  width: 562px;
+}
+
 #oauth-enroll-step-contents {
   color: #666;
   height: 100%;
-  margin-bottom: 10px;
-  position: relative;
   width: 100%;
 }
 
 #oauth-enroll-step-contents > div {
   display: none;
 }
 
 .oauth-enroll-state-working #oauth-enroll-step-working,
 .oauth-enroll-state-error #oauth-enroll-step-error,
 .oauth-enroll-state-success #oauth-enroll-step-success {
@@ skipping 69 matching lines @@
 .oauth-enroll-state-error #oauth-enroll-back-button,
 .oauth-enroll-state-success #oauth-enroll-done-button {
   display: inline;
 }
 
 #oobe.oauth-enrollment #header-oauth-enrollment {
   display: block;
 }
 
 #oauth-saml-notice-container {
+  -webkit-margin-start: 19px;
   left: 0;
   position: absolute;
   right: 0;
-  text-align: center;
-  top: 62px;
+  text-align: start;
+  top: 15px;
 }
 
 #oauth-enrollment.saml {
-  padding: 97px 0 21px;
-}
-
-#oauth-enrollment.saml #oauth-enroll-auth-view {
-  height: 444px;
+  padding-top: 47px;
 }
 
 #oauth-enrollment.saml #oauth-enrollment-controls,
 #oauth-enrollment.saml #oauth-enroll-signin-link-container {
   -webkit-padding-end: 17px;
 }
 
 #oauth-enrollment:not(.saml) #oauth-saml-notice-container {
   display: none;
 }
 
 #oauth-saml-notice-message {
+  color: rgb(106, 106, 106);
+  font-size: 13px;
   margin: 0 auto;
 }
 
 #oauth-enroll-cancel-button {
   background: transparent none;
   background-image: url(chrome://theme/IDR_LOGIN_CLOSE_BUTTTON);
   background-position: center;
   background-repeat: no-repeat;
   height: 14px;
   position: absolute;
   right: 15px;
   top: 15px;
   width: 14px;
   z-index: 1;
 }
 
 html[dir=rtl] #oauth-enroll-cancel-button {
   left: 15px;
   right: auto;
 }
 
+#oauth-enrollment.saml #oauth-enroll-cancel-button {
+  background-image: url(chrome://theme/IDR_LOGIN_CLOSE_BUTTTON_ON_WHITE);
+}
+
 #oauth-enroll-back-button {
   background: transparent none;
   background-image: url(chrome://theme/IDR_LOGIN_BACK_BUTTTON);
   background-position: center;
   background-repeat: no-repeat;
   height: 18px;
   left: 14px;
   position: absolute;
   top: 14px;
   width: 18px;
   z-index: 1;
 }
 
 html[dir=rtl] #oauth-enroll-back-button {
   -webkit-transform: scaleX(-1);
   left: auto;
   right: 14px;
 }
+
+#oauth-enrollment.saml #oauth-enroll-back-button {
+  display: none;
+}