DevTools: Use lightweight sampling mode to collect runtime call stats for Timeline.

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 /**
  * @implements {WebInspector.TargetManager.Observer}
  * @implements {WebInspector.TracingManagerClient}
  * @unrestricted
  */
 WebInspector.TimelineController = class {
   /**
@@ skipping 26 matching lines @@
       '-*', 'devtools.timeline', 'v8.execute', disabledByDefault('devtools.timeline'),
       disabledByDefault('devtools.timeline.frame'), WebInspector.TracingModel.TopLevelEventCategory,
       WebInspector.TimelineModel.Category.Console, WebInspector.TimelineModel.Category.UserTiming
     ];
     categoriesArray.push(WebInspector.TimelineModel.Category.LatencyInfo);
 
     if (Runtime.experiments.isEnabled('timelineFlowEvents')) {
       categoriesArray.push(disabledByDefault('toplevel.flow'), disabledByDefault('ipc.flow'));
     }
     if (Runtime.experiments.isEnabled('timelineV8RuntimeCallStats') && enableJSSampling)
-      categoriesArray.push(disabledByDefault('v8.runtime_stats'));
+      categoriesArray.push(disabledByDefault('v8.runtime_stats_sampling'));
     if (Runtime.experiments.isEnabled('timelineTracingJSProfile') && enableJSSampling) {
       categoriesArray.push(disabledByDefault('v8.cpu_profiler'));
       if (WebInspector.moduleSetting('highResolutionCpuProfiling').get())
         categoriesArray.push(disabledByDefault('v8.cpu_profiler.hires'));
     }
     if (captureCauses || enableJSSampling)
       categoriesArray.push(disabledByDefault('devtools.timeline.stack'));
     if (captureCauses && Runtime.experiments.isEnabled('timelineInvalidationTracking'))
       categoriesArray.push(disabledByDefault('devtools.timeline.invalidationTracking'));
     if (capturePictures) {
@@ skipping 208 matching lines @@
   }
 
   /**
    * @param {number} progress
    * @override
    */
   eventsRetrievalProgress(progress) {
     this._delegate.loadingProgress(progress);
   }
 };