Unified icon-buttons used in the new GAIA flow.

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

Index: chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.css
diff --git a/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.css b/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.css
index 36cf3d68d78a7e57c3edf556d18028c2f678512a..02733dd517a936dd92d51fada7b7413cfae18049 100644
--- a/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.css
+++ b/chrome/browser/resources/chromeos/login/oobe_screen_oauth_enrollment_webview.css
@@ -122,8 +122,14 @@
   margin: 0 auto;
 }
 
+#oauth-enroll-cancel-button,
+#oauth-enroll-back-button {
+  position: absolute;
+  top: 10px;
+}
+
 #oauth-enroll-cancel-button {
-  background-image: url(chrome://theme/IDR_LOGIN_CLOSE_BUTTTON_ON_WHITE);
+  color: rgba(0, 0, 0, .54);
   right: 10px;
 }
 
@@ -132,13 +138,17 @@ html[dir=rtl] #oauth-enroll-cancel-button {
   right: auto;
 }
 
+#oauth-enrollment.saml #oauth-enroll-cancel-button {
+  color: rgba(0, 0, 0, .54);
+}
+
 .oauth-enroll-state-signin #oauth-enroll-cancel-button,
 .oauth-enroll-state-working #oauth-enroll-cancel-button {
-  background-image: url(chrome://theme/IDR_LOGIN_CLOSE_BUTTTON);
+  color: white;
 }
 
 #oauth-enroll-back-button {
-  background-image: url(chrome://theme/IDR_LOGIN_BACK_BUTTTON);
+  color: white;
   left: 10px;
 }