ChromeOS: Implement EULA screen of material design OOBE.

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

Index: chrome/browser/resources/chromeos/login/oobe_eula.css
diff --git a/ui/webui/resources/cr_elements/cr_expand_button/cr_expand_button.css b/chrome/browser/resources/chromeos/login/oobe_eula.css
similarity index 83%
copy from ui/webui/resources/cr_elements/cr_expand_button/cr_expand_button.css
copy to chrome/browser/resources/chromeos/login/oobe_eula.css
index 204e397c466ba411b87b0a6b69a838c653041545..acc497915bab1239b1b304db27893e8eb6ebe634 100644
--- a/ui/webui/resources/cr_elements/cr_expand_button/cr_expand_button.css
+++ b/chrome/browser/resources/chromeos/login/oobe_eula.css
@@ -2,6 +2,6 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
-:host {
-  display: inline-block;
+#crosEulaFrame {
+ width: 100%;
 }