DevTools: fix compilation for the VBoxes with toolbar items.

third_party/WebKit/Source/devtools/front_end/sources/SourcesView.js

 // Copyright 2014 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.
 
 /**
  * @constructor
  * @implements {WebInspector.TabbedEditorContainerDelegate}
  * @implements {WebInspector.Searchable}
  * @implements {WebInspector.Replaceable}
  * @extends {WebInspector.VBox}
  * @param {!WebInspector.Workspace} workspace
  * @param {!WebInspector.SourcesPanel} sourcesPanel
  * @suppressGlobalPropertiesCheck
  */
 WebInspector.SourcesView = function(workspace, sourcesPanel)
 {
     WebInspector.VBox.call(this);
     this.registerRequiredCSS("sources/sourcesView.css");
     this.element.id = "sources-panel-sources-view";
     this.setMinimumAndPreferredSizes(50, 52, 150, 100);
 
     this._workspace = workspace;
     this._sourcesPanel = sourcesPanel;
 
     this._searchableView = new WebInspector.SearchableView(this, "sourcesViewSearchConfig");
     this._searchableView.setMinimalSearchQuerySize(0);
     this._searchableView.show(this.element);
 
-    /** @type {!Map.<!WebInspector.UISourceCode, !WebInspector.VBoxWithToolbarItems>} */
+    /** @type {!Map.<!WebInspector.UISourceCode, !WebInspector.Widget>} */
     this._sourceViewByUISourceCode = new Map();
 
     var tabbedEditorPlaceholderText = WebInspector.isMac() ? WebInspector.UIString("Hit Cmd+P to open a file") : WebInspector.UIString("Hit Ctrl+P to open a file");
     this._editorContainer = new WebInspector.TabbedEditorContainer(this, WebInspector.settings.createLocalSetting("previouslyViewedFiles", []), tabbedEditorPlaceholderText);
     this._editorContainer.show(this._searchableView.element);
     this._editorContainer.addEventListener(WebInspector.TabbedEditorContainer.Events.EditorSelected, this._editorSelected, this);
     this._editorContainer.addEventListener(WebInspector.TabbedEditorContainer.Events.EditorClosed, this._editorClosed, this);
 
     this._historyManager = new WebInspector.EditingLocationHistoryManager(this, this.currentSourceFrame.bind(this));
 
@@ skipping 234 matching lines @@
     _projectRemoved: function(event)
     {
         var project = event.data;
         var uiSourceCodes = project.uiSourceCodes();
         this._removeUISourceCodes(uiSourceCodes);
     },
 
     _updateScriptViewToolbarItems: function()
     {
         this._scriptViewToolbar.removeToolbarItems();
-        var view = /** @type {?WebInspector.VBoxWithToolbarItems} */(this.visibleView());
-        if (view) {
-            for (var item of view.toolbarItems())
+        var view = this.visibleView()
+        if (view instanceof WebInspector.VBoxWithToolbarItems) {
+            for (var item of (/** @type {?WebInspector.VBoxWithToolbarItems} */(view)).toolbarItems())
                 this._scriptViewToolbar.appendToolbarItem(item);
         }
     },
 
     /**
      * @param {!WebInspector.UISourceCode} uiSourceCode
      * @param {number=} lineNumber 0-based
      * @param {number=} columnNumber
      * @param {boolean=} omitFocus
      * @param {boolean=} omitHighlight
@@ skipping 52 matching lines @@
             sourceView = new WebInspector.ImageView(WebInspector.NetworkProject.uiSourceCodeMimeType(uiSourceCode), uiSourceCode);
         else if (contentType === WebInspector.resourceTypes.Font)
             sourceView = new WebInspector.FontView(WebInspector.NetworkProject.uiSourceCodeMimeType(uiSourceCode), uiSourceCode);
         else
             sourceFrame = new WebInspector.UISourceCodeFrame(uiSourceCode);
 
         if (sourceFrame) {
             sourceFrame.setHighlighterType(WebInspector.NetworkProject.uiSourceCodeMimeType(uiSourceCode));
             this._historyManager.trackSourceFrameCursorJumps(sourceFrame);
         }
-        this._sourceViewByUISourceCode.set(uiSourceCode, /** @type {!WebInspector.VBoxWithToolbarItems} */(sourceFrame || sourceView));
+        this._sourceViewByUISourceCode.set(uiSourceCode, /** @type {!WebInspector.Widget} */(sourceFrame || sourceView));
         return /** @type {!WebInspector.Widget} */(sourceFrame || sourceView);
     },
 
     /**
      * @param {!WebInspector.UISourceCode} uiSourceCode
      * @return {!WebInspector.Widget}
      */
     _getOrCreateSourceView: function(uiSourceCode)
     {
         return this._sourceViewByUISourceCode.get(uiSourceCode) || this._createSourceView(uiSourceCode);
@@ skipping 434 matching lines @@
      */
     handleAction: function(context, actionId)
     {
         var sourcesView = WebInspector.context.flavor(WebInspector.SourcesView);
         if (!sourcesView)
             return false;
         sourcesView._editorContainer.closeAllFiles();
         return true;
     }
 }