[DevTools] Add minimum size to WebInspector.View.

Source/devtools/front_end/Panel.js

Index: Source/devtools/front_end/Panel.js
diff --git a/Source/devtools/front_end/Panel.js b/Source/devtools/front_end/Panel.js
index b1d35287070433c2bc232cf81c8a89c539e0158b..72284247aa73a9b4875b274e16ce91add73e50dd 100644
--- a/Source/devtools/front_end/Panel.js
+++ b/Source/devtools/front_end/Panel.js
@@ -154,12 +154,15 @@ WebInspector.PanelWithSidebarTree = function(name, defaultWidth)
     WebInspector.Panel.call(this, name);
 
     this._panelSplitView = new WebInspector.SplitView(true, false, this._panelName + "PanelSplitViewState", defaultWidth || 200);
-    this._panelSplitView.setSidebarElementConstraints(Preferences.minSidebarWidth);
     this._panelSplitView.show(this.element);
 
-    var sidebarElement = this._panelSplitView.sidebarElement();
-    sidebarElement.classList.add("sidebar");
-    var sidebarTreeElement = sidebarElement.createChild("ol", "sidebar-tree");
+    var sidebarView = new WebInspector.VBox();
+    sidebarView.setMinimumSize(new Size(Preferences.minSidebarWidth, 25));
+    sidebarView.show(this._panelSplitView.sidebarElement());
+
+    this._sidebarElement = sidebarView.element;
+    this._sidebarElement.classList.add("sidebar");
+    var sidebarTreeElement = this._sidebarElement.createChild("ol", "sidebar-tree");
     this.sidebarTree = new TreeOutline(sidebarTreeElement);
 }
 
@@ -169,7 +172,7 @@ WebInspector.PanelWithSidebarTree.prototype = {
      */
     sidebarElement: function()
     {
-        return this._panelSplitView.sidebarElement();
+        return this._sidebarElement;
     },
 
     /**
@@ -181,15 +184,6 @@ WebInspector.PanelWithSidebarTree.prototype = {
     },
 
     /**
-     * @param {number=} minWidth
-     * @param {number=} minHeight
-     */
-    setMainElementConstraints: function(minWidth, minHeight)
-    {
-        this._panelSplitView.setMainElementConstraints(minWidth, minHeight);
-    },
-
-    /**
      * @return {!Element}
      */
     defaultFocusedElement: function()