DevTools: switch Timeline frontend into buffered mode and remove the corresponding experiment.

Source/devtools/front_end/timeline/TimelineModelImpl.js

Index: Source/devtools/front_end/timeline/TimelineModelImpl.js
diff --git a/Source/devtools/front_end/timeline/TimelineModelImpl.js b/Source/devtools/front_end/timeline/TimelineModelImpl.js
index d44ae4a323b915d1dfd2decc791b936adcf42599..36b03055f9ea8a783eee2c588e94549df07421e9 100644
--- a/Source/devtools/front_end/timeline/TimelineModelImpl.js
+++ b/Source/devtools/front_end/timeline/TimelineModelImpl.js
@@ -49,13 +49,13 @@ WebInspector.TimelineModelImpl.prototype = {
                            WebInspector.TimelineModel.RecordType.DrawFrame,
                            WebInspector.TimelineModel.RecordType.RequestMainThreadFrame,
                            WebInspector.TimelineModel.RecordType.ActivateLayerTree ];
-        this._timelineManager.start(maxStackFrames, WebInspector.experimentsSettings.timelineNoLiveUpdate.isEnabled(), liveEvents.join(","), captureMemory, includeGPUEvents, this._fireRecordingStarted.bind(this));
+        this._timelineManager.start(maxStackFrames, liveEvents.join(","), captureMemory, includeGPUEvents, this._fireRecordingStarted.bind(this));
     },
 
     stopRecording: function()
     {
         if (!this._clientInitiatedRecording) {
-            this._timelineManager.start(undefined, undefined, undefined, undefined, undefined, stopTimeline.bind(this));
+            this._timelineManager.start(undefined, undefined, undefined, undefined, stopTimeline.bind(this));
             return;
         }
 
@@ -86,8 +86,7 @@ WebInspector.TimelineModelImpl.prototype = {
      */
     _onRecordAdded: function(event)
     {
-        if (this._collectionEnabled)

[yurys, 2014/07/17 10:42:24]

Without this check we will display events if timeline recording was initiated by
an extension. @caseq, do you think it is OK?

-            this._addRecord(/** @type {!TimelineAgent.TimelineEvent} */(event.data));
+        this._addRecord(/** @type {!TimelineAgent.TimelineEvent} */(event.data));
     },
 
     /**
@@ -106,9 +105,8 @@ WebInspector.TimelineModelImpl.prototype = {
      */
     _onStopped: function(event)
     {
-        // If we were buffering events, discard those that got through, the real ones are coming!
-        if (WebInspector.experimentsSettings.timelineNoLiveUpdate.isEnabled())
-            this.reset();
+        // We were buffering events, discard those that got through, the real ones are coming!
+        this.reset();
         if (event.data) {
             // Stopped from console.
             this._fireRecordingStopped(null, null);
@@ -125,7 +123,6 @@ WebInspector.TimelineModelImpl.prototype = {
 
     _fireRecordingStarted: function()
     {
-        this._collectionEnabled = true;
         this.dispatchEventToListeners(WebInspector.TimelineModel.Events.RecordingStarted);
     },
 
@@ -135,7 +132,6 @@ WebInspector.TimelineModelImpl.prototype = {
      */
     _fireRecordingStopped: function(error, cpuProfile)
     {
-        this._collectionEnabled = false;
         if (cpuProfile)
             WebInspector.TimelineJSProfileProcessor.mergeJSProfileIntoTimeline(this, cpuProfile);
         this.dispatchEventToListeners(WebInspector.TimelineModel.Events.RecordingStopped);