Improve display of long isolate names on summary page

runtime/observatory/lib/src/elements/css/shared.css

Index: runtime/observatory/lib/src/elements/css/shared.css
diff --git a/runtime/observatory/lib/src/elements/css/shared.css b/runtime/observatory/lib/src/elements/css/shared.css
index 4e6e480c3d0e64494b982ab81a9b915c868e3b05..556d9977b380b6dc125b1d7d725b2b4f011b83c5 100644
--- a/runtime/observatory/lib/src/elements/css/shared.css
+++ b/runtime/observatory/lib/src/elements/css/shared.css
@@ -1435,6 +1435,17 @@ isolate-run-state > span {
 isolate-shared-summary {
   display: block;
 }
+
+.isolate-ref-container {
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.isolate-state-container {
+  display: inline-block;
+  min-width: 18ex;
+}
+
 isolate-shared-summary > .summary {
   height: 300px;
   position: relative;