DevTools: Timeline: do not force lazyTimelineView to be created.

Source/devtools/front_end/timeline/TimelinePanel.js

Index: Source/devtools/front_end/timeline/TimelinePanel.js
diff --git a/Source/devtools/front_end/timeline/TimelinePanel.js b/Source/devtools/front_end/timeline/TimelinePanel.js
index 5f77ffa6c60cb63bad221aeab0c84737ffd50cd4..47da433e0cf3a37cc53746823808581a9665ace9 100644
--- a/Source/devtools/front_end/timeline/TimelinePanel.js
+++ b/Source/devtools/front_end/timeline/TimelinePanel.js
@@ -328,7 +328,6 @@ WebInspector.TimelinePanel.prototype = {
     _createRecordingOptions: function()
     {
         var topPaneSidebarElement = this._topPane.sidebarElement();
-
         this._captureStacksSetting = WebInspector.settings.createSetting("timelineCaptureStacks", true);
         topPaneSidebarElement.appendChild(WebInspector.SettingsUI.createSettingCheckbox(WebInspector.UIString("Capture stacks"),
                                           this._captureStacksSetting, true, undefined,
@@ -656,7 +655,9 @@ WebInspector.TimelinePanel.prototype = {
         if (this._captureTracingSetting && this._captureTracingSetting.get())
             this._addModeView(new WebInspector.TimelineTracingView(this, this._tracingModel, this._model));
 
-        this._timelineView().setFrameModel(isFrameMode ? this._frameModel() : null);
+        if (this._lazyTimelineView)
+            this._lazyTimelineView.setFrameModel(isFrameMode ? this._frameModel() : null);

[alph, 2014/07/03 10:16:44]

I'm wondering how it's going to setFrameModel when the lazy view is finally
created?

[loislo, 2014/07/03 11:37:32]

If we selected a mode where TimelineView needs to be created then we create or
reuse it in the line 640 of the file.

+
         this._overviewPane.setOverviewControls(this._overviewControls);
         this.doResize();
         this._updateSelectedRangeStats();