Revert of Revert of DevTools: allow storing devtools preferences on the browser side. [blink]

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}
@@ skipping 12 matching lines @@
     this._sourcesPanel = sourcesPanel;
 
     this._searchableView = new WebInspector.SearchableView(this, "sourcesViewSearchConfig");
     this._searchableView.setMinimalSearchQuerySize(0);
     this._searchableView.show(this.element);
 
     /** @type {!Map.<!WebInspector.UISourceCode, !WebInspector.UISourceCodeFrame>} */
     this._sourceFramesByUISourceCode = 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, "previouslyViewedFiles", tabbedEditorPlaceholderText);
+    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));
 
     this._statusBarContainerElement = this.element.createChild("div", "sources-status-bar");
     this._statusBarEditorActions = new WebInspector.StatusBar(this._statusBarContainerElement);
 
     self.runtime.instancesPromise(WebInspector.SourcesView.EditorAction).then(appendButtonsForExtensions.bind(this));
@@ skipping 774 matching lines @@
         var sourcesView = WebInspector.context.flavor(WebInspector.SourcesView);
         var currentUISourceCode = sourcesView.currentUISourceCode();
         if (!currentUISourceCode)
             return;
         var nextUISourceCode = WebInspector.SourcesView.SwitchFileActionDelegate._nextFile(currentUISourceCode);
         if (!nextUISourceCode)
             return;
         sourcesView.showSourceLocation(nextUISourceCode);
     }
 }