DevTools: migrate sidebar pane's titleElement to use Toolbar.

Source/devtools/front_end/sources/SourcesPanel.js

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 448 matching lines @@
     },
 
     _clearInterface: function()
     {
         this.sidebarPanes.callstack.update(null);
         this.sidebarPanes.scopechain.update(null);
         this.sidebarPanes.jsBreakpoints.clearBreakpointHighlight();
         WebInspector.domBreakpointsSidebarPane.clearBreakpointHighlight();
         this.sidebarPanes.eventListenerBreakpoints.clearBreakpointHighlight();
         this.sidebarPanes.xhrBreakpoints.clearBreakpointHighlight();
-        if (Runtime.experiments.isEnabled("stepIntoAsync"))
+        if (this.sidebarPanes.asyncOperationBreakpoints)
             this.sidebarPanes.asyncOperationBreakpoints.clearBreakpointHighlight();
 
         this._sourcesView.clearCurrentExecutionLine();
         this._updateDebuggerButtons();
 
         if (this._switchToPausedTargetTimeout)
             clearTimeout(this._switchToPausedTargetTimeout);
     },
 
     /**
@@ skipping 266 matching lines @@
         this._toggleBreakpointsButton = new WebInspector.ToolbarButton(WebInspector.UIString("Deactivate breakpoints."), "breakpoint-toolbar-item");
         this._toggleBreakpointsButton.setToggled(false);
         this._toggleBreakpointsButton.addEventListener("click", this._toggleBreakpointsClicked, this);
         debugToolbar.appendToolbarItem(this._toggleBreakpointsButton);
 
         // Pause on Exception
         this._pauseOnExceptionButton = new WebInspector.ToolbarButton("", "pause-on-exceptions-toolbar-item");
         this._pauseOnExceptionButton.addEventListener("click", this._togglePauseOnExceptions, this);
         debugToolbar.appendToolbarItem(this._pauseOnExceptionButton);
 
+        // Async operations
+        debugToolbar.appendToolbarItem(new WebInspector.ToolbarCheckbox(WebInspector.UIString("Async"), WebInspector.UIString("Capture async stack traces"), WebInspector.moduleSetting("enableAsyncStackTraces")));
+
         return debugToolbar;
     },
 
     _createDebugToolbarDrawer: function()
     {
         var debugToolbarDrawer = createElementWithClass("div", "scripts-debug-toolbar-drawer");
 
         var label = WebInspector.UIString("Pause On Caught Exceptions");
         var setting = WebInspector.moduleSetting("pauseOnCaughtException");
         debugToolbarDrawer.appendChild(WebInspector.SettingsUI.createSettingCheckbox(label, setting, true));
@@ skipping 683 matching lines @@
 WebInspector.SourcesPanelFactory.prototype = {
     /**
      * @override
      * @return {!WebInspector.Panel}
      */
     createPanel: function()
     {
         return WebInspector.SourcesPanel.instance();
     }
 }