[DevTools] Fix popover regression in M58

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

Index: third_party/WebKit/Source/devtools/front_end/ui/popover.css
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/popover.css b/third_party/WebKit/Source/devtools/front_end/ui/popover.css
index 1baba475343ed6b311f163239b88edd7c82b4224..45ccd7f8a9d7847db19b72215545804a26db02dd 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/popover.css
+++ b/third_party/WebKit/Source/devtools/front_end/ui/popover.css
@@ -1,4 +1,4 @@
-:host {
+.popover-element {
     position: absolute;
     z-index: 600;
     pointer-events: none;
@@ -6,11 +6,7 @@
     background-color: white;
     box-shadow: 0 6px 10px 0 rgba(0, 0, 0, 0.3), 0 2px 2px 0 rgba(0, 0, 0, 0.2), 0 1px 4px 0 rgba(0, 0, 0, 0.37);
     border-radius: 2px;
-}
-
-.widget {
     flex: auto;
-    pointer-events: none;
     overflow: visible;
 }