Fix button spacing for overriding variations country.

chrome/browser/resources/translate_internals/translate_internals.css

Index: chrome/browser/resources/translate_internals/translate_internals.css
diff --git a/chrome/browser/resources/translate_internals/translate_internals.css b/chrome/browser/resources/translate_internals/translate_internals.css
index 11626b4e851fd01362153d9d2b9640c16c25f0b1..8b089c7057266953d8bc0587f049b11ffd890d84 100644
--- a/chrome/browser/resources/translate_internals/translate_internals.css
+++ b/chrome/browser/resources/translate_internals/translate_internals.css
@@ -138,3 +138,7 @@ td.detection-logs-content div {
 .prefs-setting-disabled {
   display: none;
 }
+
+#country-override br {

[dpapad, 2016/10/10 17:30:52]

This is a very indirect way to add spacing between the textbox and the button.
Can we simply used something like

#country-override button {
 margin-top: 10px;
}

OR

#country-override input {
  margin-bottom: 10px;
}

[hamelphi, 2016/10/11 15:54:42]

Done.

+ line-height: 180%;
+}