[DevTools] Add preferred size to WebInspector.View.

Source/devtools/front_end/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 978 matching lines @@
         if (!vertically)
             this._splitView.uninstallResizer(this._sourcesView.statusBarContainerElement());
         else
             this._splitView.installResizer(this._sourcesView.statusBarContainerElement());
 
         // Create vertical box with stack.
         var vbox = new WebInspector.VBox();
         vbox.element.appendChild(this._debugToolbarDrawer);
         vbox.element.appendChild(this.debugToolbar);
         vbox.element.appendChild(this.threadsToolbar.element);
-        vbox.setMinimumSize(WebInspector.SourcesPanel.minToolbarWidth, 25);
+        vbox.setMinimumAndPreferredSizes(25, 25, WebInspector.SourcesPanel.minToolbarWidth, 100);
         var sidebarPaneStack = new WebInspector.SidebarPaneStack();
         sidebarPaneStack.element.classList.add("flex-auto");
         sidebarPaneStack.show(vbox.element);
 
         if (!vertically) {
             // Populate the only stack.
             for (var pane in this.sidebarPanes)
                 sidebarPaneStack.addPane(this.sidebarPanes[pane]);
             this._extensionSidebarPanesContainer = sidebarPaneStack;
 
@@ skipping 222 matching lines @@
 WebInspector.SourcesPanel.ShowGoToSourceDialogActionDelegate.prototype = {
     /**
      * @return {boolean}
      */
     handleAction: function()
     {
         /** @type {!WebInspector.SourcesPanel} */ (WebInspector.inspectorView.showPanel("sources")).showGoToSourceDialog();
         return true;
     }
 }