DevTools: Send async stack trace with Network.Initiator.

Source/devtools/front_end/sources/CallStackSidebarPane.js

Index: Source/devtools/front_end/sources/CallStackSidebarPane.js
diff --git a/Source/devtools/front_end/sources/CallStackSidebarPane.js b/Source/devtools/front_end/sources/CallStackSidebarPane.js
index a41e399ab352acdf0052cbabd469d9846d82c64b..e933f55b969281741b36e1d4061bb74e3f4e2366 100644
--- a/Source/devtools/front_end/sources/CallStackSidebarPane.js
+++ b/Source/devtools/front_end/sources/CallStackSidebarPane.js
@@ -71,11 +71,7 @@ WebInspector.CallStackSidebarPane.prototype = {
         var topStackHidden = (this._hiddenPlacards === this.placards.length);
 
         while (asyncStackTrace) {
-            var title = asyncStackTrace.description;
-            if (title)
-                title += " " + WebInspector.UIString("(async)");
-            else
-                title = WebInspector.UIString("Async Call");
+            var title = WebInspector.asyncStackTraceLabel(asyncStackTrace.description);
             var asyncPlacard = new WebInspector.Placard(title, "");
             asyncPlacard.element.addEventListener("click", this._selectNextVisiblePlacard.bind(this, this.placards.length, false), false);
             asyncPlacard.element.addEventListener("contextmenu", this._asyncPlacardContextMenu.bind(this, this.placards.length), true);