Bug 1376893 - Don't display the disabled reload button with less opacity since it is only disabled temporarily and causes flickering in the UI. r=johannh

MozReview-Commit-ID: FHbzB54SSqC

--HG--
extra : rebase_source : 1a1dc796cb5208c583bac6bfeb846e8d4ead756f

browser/base/content/browser.css

@@ -474,6 +474,14 @@ toolbar:not(#TabsToolbar) > #personal-bookmarks {
   visibility: collapse;
 }
 
+/* The reload-button is only disabled temporarily when it becomes visible
+   to prevent users from accidentally clicking it. We don't however need
+   to show this disabled state, as the flicker that it generates is short
+   enough to be visible but not long enough to explain anything to users. */
+#reload-button[disabled]:not(:-moz-window-inactive) > .toolbarbutton-icon {
+  opacity: 1 !important;
+}
+
 #PanelUI-feeds > .feed-toolbarbutton:-moz-locale-dir(rtl) {
   direction: rtl;
 }