Various Feedback fixes.

chrome/browser/resources/feedback/css/feedback.css

 /* Copyright 2013 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. */
 
 
 html {
   height: 100%;
 }
 
 body {
   background-color: #fbfbfb;
   height: 100%;
   margin: 0;
+  overflow-y: auto;

[xiyuan, 2014/08/28 21:47:55]

Do we need to worry about overflow-x?

[rkc, 2014/08/28 21:59:03]

It doesn't seem to help with the send button, but it does help in reaching the X
button on the titlebar at the top, so added it.

   padding: 0;
   width: 100%;
 }
 
 .title-bar {
   -webkit-align-items: center;
   -webkit-app-region: drag;
   background-color: #fff;
   box-shadow: 0 1px #d0d0d0;
   color: rgb(80, 80, 82);
@@ skipping 140 matching lines @@
 
 button.white-button {
   -webkit-margin-end: 10px;
   color: #000;
 }
 
 button.blue-button {
   color: #fff;
   text-shadow: 1px sharp drop shadow rgb(45, 106, 218);
 }