DevTools: fix blackboxing buttons

third_party/WebKit/Source/devtools/front_end/ui/listWidget.css

Index: third_party/WebKit/Source/devtools/front_end/ui/listWidget.css
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/listWidget.css b/third_party/WebKit/Source/devtools/front_end/ui/listWidget.css
index 505101988a7218af22def6cf5b7ab147b16a392f..c14b14418c577f97d9dd8e3a1412c69b9efcf46c 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/listWidget.css
+++ b/third_party/WebKit/Source/devtools/front_end/ui/listWidget.css
@@ -50,38 +50,14 @@
     flex-direction: row;
     align-items: center;
     pointer-events: auto;
+    visibility: hidden;
 }
 
 .list-item:hover .controls-buttons {
     background-color: hsl(0, 0%, 96%);
-}
-
-.remove-button,
-.edit-button {
-    opacity: 0.5;
-    cursor: pointer;
-    flex: none;
-    visibility: hidden;
-}
-
-.list-item:hover .remove-button,
-.list-item:hover .edit-button {
     visibility: visible;
 }
 
-.remove-button:hover,
-.edit-button:hover {
-    opacity: 0.7;
-}
-
-.remove-button {
-    background-position: -128px -24px;
-}
-
-.edit-button {
-    background-position: -160px 0px;
-}
-
 .editor-container {
     display: flex;
     flex-direction: column;