Hide scrollbars for the body of the sign-in dialogs.

chrome/browser/resources/signin/signin_shared_css.html

Index: chrome/browser/resources/signin/signin_shared_css.html
diff --git a/chrome/browser/resources/signin/signin_shared_css.html b/chrome/browser/resources/signin/signin_shared_css.html
index 20eefa87d4e9031adad868a8e6041d0e42d1f92e..255b9ee9a0007f1882bdf359e52708ff3660adfe 100644
--- a/chrome/browser/resources/signin/signin_shared_css.html
+++ b/chrome/browser/resources/signin/signin_shared_css.html
@@ -10,6 +10,9 @@
       body {
         margin: 0;
         padding: 0;
+        /* Scrollbars are hidden as the sign-in dialogs are automatically
+        resized.*/
+        overflow: hidden;

[xiyuan, 2016/11/09 18:10:32]

nit: move before 'padding' to keep the list alpha sorted.

[msarda, 2016/11/10 16:40:35]

Done.

       }
 
       paper-button {
@@ -37,8 +40,10 @@
       .container {
         background-color: white;
         color: #333;
-        overflow: hidden;
         width: 448px;

[xiyuan, 2016/11/09 18:10:32]

nit: move it back to keep the list sorted.

[msarda, 2016/11/10 16:40:35]

Done.

+        /* Scrollbars are hidden as the sign-in dialogs are automatically
+        resized.*/
+        overflow: hidden;
       }
 
       .top-title-bar {