DevTools: Do not linkify to pseudo (program) node when there's no URL

third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
index ead369002491d815e16442d76a9088b7579bbca5..ea5c74804d8488e1fcebc3fa552299d4cc618dd5 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
@@ -996,11 +996,16 @@ WebInspector.TimelineUIUtils.buildNetworkRequestDetails = function(request, mode
     var sendRequest = request.children[0];
     var topFrame = WebInspector.TimelineUIUtils.topStackFrame(sendRequest);
     if (topFrame) {
-        contentHelper.appendElementRow(title, linkifier.linkifyConsoleCallFrameForTimeline(target, topFrame));
+        var link = linkifier.linkifyConsoleCallFrameForTimeline(target, topFrame);
+        if (link)
+            contentHelper.appendElementRow(title, link);
     } else if (sendRequest.initiator) {
         var initiatorURL = WebInspector.TimelineUIUtils.eventURL(sendRequest.initiator);
-        if (initiatorURL)
-            contentHelper.appendElementRow(title, linkifier.linkifyScriptLocation(target, null, initiatorURL, 0));
+        if (initiatorURL) {
+            var link = linkifier.linkifyScriptLocation(target, null, initiatorURL, 0);
+            if (link)
+                contentHelper.appendElementRow(title, link);
+        }
     }
 
     /**
@@ -2051,7 +2056,10 @@ WebInspector.TimelineDetailsContentHelper.prototype = {
             return;
         if (startColumn)
             --startColumn;
-        this.appendElementRow(title, this._linkifier.linkifyScriptLocation(this._target, null, url, startLine - 1, startColumn));
+        var link = this._linkifier.linkifyScriptLocation(this._target, null, url, startLine - 1, startColumn);
+        if (!link)
+            return;
+        this.appendElementRow(title, link);
     },
 
     /**