Bug 1518431 - Implement panel footer top border in global.inc.css. r=ntim

Differential Revision: https://phabricator.services.mozilla.com/D15916

--HG--
extra : moz-landing-system : lando

browser/themes/shared/controlcenter/panel.inc.css

@@ -315,7 +315,6 @@
 
 .identity-popup-footer > button {
   margin: 0;
-  border-top: 1px solid var(--panel-separator-color);
   padding: 8px 20px;
 }
 

browser/themes/shared/downloads/downloads.inc.css

@@ -30,10 +30,6 @@
   margin: 0;
 }
 
-.downloadsPanelFooter {
-  border-top: 1px solid var(--panel-separator-color);
-}
-
 .downloadsPanelFooter toolbarseparator,
 @item@ > toolbarseparator {
   margin: 0;

browser/themes/shared/places/editBookmarkPanel.inc.css

@@ -59,7 +59,6 @@ html|img#editBookmarkPanelFavicon[src] {
   flex: 1;
   margin: 0;
   padding: .8em 0;
-  border-top: 1px solid var(--panel-separator-color);
 }
 
 .editBookmarkPanelBottomButton:not(:last-child) {

toolkit/themes/shared/global.inc.css

@@ -57,6 +57,7 @@
 
 .panel-footer > button {
   -moz-appearance: none;
+  border-top: 1px solid var(--panel-separator-color);
   /* !important overrides :hover and :active colors from button.css: */
   color: inherit !important;
 }

toolkit/themes/shared/popupnotification.inc.css

@@ -61,7 +61,6 @@
   margin: 0;
   min-width: 0;
   min-height: 41px;
-  border-top: 1px solid var(--panel-separator-color);
 }
 
 .popup-notification-primary-button:not([alone]) {