Update UI and catch executeScript errors now shown in Canary

go-back-with-backspace/pages/options.css

 /**
  * Copyright 2016 Google Inc. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 body {
+  background-color: #fff;
+  margin: 0;
   padding: 10px;
   direction: __MSG_@@bidi_dir__;
 }
 
 textarea {
   width: 100%;

[Devlin, 2016/11/01 15:12:15]

chromium-style: alphabetize these

-  margin: 0;
-  padding: 0;
+  margin-top: 2px;
+  padding-__MSG_@@bidi_start_edge__: 4px;

[Devlin, 2016/11/01 15:12:15]

Why not use -webkit-padding variants?

[Pam (message me for reviews), 2016/11/01 21:29:03]

Because I didn't know about them. I'm only pretending to be a front-end
engineer. Thanks for the tip; I've now read the CSS style guide as well.

 }
 
-.applets {
-  padding-top: 20px;
+input {
+  margin-bottom: 20px;
 }
 
-.whitelist {
-  padding-top: 10px;
-  padding-__MSG_@@bidi_start_edge__: 40px;
+fieldset {
+  border: solid 1px  #ccc;

[Devlin, 2016/11/01 15:12:15]

nit: looks like you have an extra space here?

+  border-radius: 3px;
+  padding: 4px 8px;
+}
+
+fieldset legend {
+  color: #036;

[Devlin, 2016/11/01 15:12:15]

optional nit: I don't know how much you want to follow chromium style here, but
I think we have a rule that unless it's 3 or 6 repeated letters (e.g. #ccc or
#dddddd), use rgb() syntax.

+}
+
+.feedback-button {
+  padding: 5px 0px 5px 0px;
+  text-align: __MSG_@@bidi_end_edge__;

[Devlin, 2016/11/01 15:12:15]

why not 'end'?

[Pam (message me for reviews), 2016/11/01 21:29:03]

Because w3schools (the first hit for [css text-align]) doesn't know about it. :P

+}
+
+.setting {
+  margin-top: 2px;
+  margin-bottom: 2px;

[Devlin, 2016/11/01 15:12:15]

Why not margin: 2px 0;?

+}
+
+.sub-setting {
+  margin-top: 5px;
+  margin-__MSG_@@bidi_start_edge__: 10px;
 }
 
 .buttons {
-  padding-top: 2px;
-  padding-bottom: 1px;
-  padding-__MSG_@@bidi_start_edge__: 20px;
-  padding-__MSG_@@bidi_end_edge__: 0px;
+  margin-top: 2px;
+  margin-bottom: 1px;
+  margin-__MSG_@@bidi_start_edge__: 20px;
+  margin-__MSG_@@bidi_end_edge__: 0px;
   text-align: __MSG_@@bidi_end_edge__;
 }
 
 #error {
+  margin-top: 5px;
+  margin-bottom: 5px;

[Devlin, 2016/11/01 15:12:15]

margin: 5px 0;

   color: red;
 }
 
-#report_page {
-  float: __MSG_@@bidi_start_edge__;
-}