Bug 1187905 - use normal titlebar buttons for devtools light theme, r=bgrins

--HG--
extra : commitid : 54bwkzwIzwH
extra : rebase_source : 75bf532eb7116ec0cdde363781572000354a2cc4

browser/themes/windows/devedition.css

@@ -285,4 +285,22 @@
   :root[devtoolstheme="dark"] #titlebar-close {
     list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-white);
   }
+
+  /* ... and normal ones for the light theme on Windows 10 */
+  :root[devtoolstheme="light"] #titlebar-min {
+    list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize);
+  }
+  :root[devtoolstheme="light"] #titlebar-max {
+    list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize);
+  }
+  #main-window[devtoolstheme="light"][sizemode="maximized"] #titlebar-max {
+    list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore);
+  }
+  :root[devtoolstheme="light"] #titlebar-close {
+    list-style-image: url(chrome://browser/skin/caption-buttons.svg#close);
+  }
+
+  :root[devtoolstheme="light"] #titlebar-close:hover {
+    list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-white);
+  }
 }