[DevTools] Rework some focus code.

third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js

Index: third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js b/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
index ab911b254a5caf922fc54c0b8d9e0ab926bbd189..2ea084cca3150718145e2f8c5558da3a630b8ceb 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/TabbedPane.js
@@ -153,6 +153,9 @@ WebInspector.TabbedPane.prototype = {
         this._closeableTabs = closeableTabs;
     },
 
+    /**
+     * @override
+     */
     focus: function()
     {
         if (this.visibleView)
@@ -432,7 +435,7 @@ WebInspector.TabbedPane.prototype = {
         if (tab.view === view)
             return;
 
-        var shouldFocus = tab.view.element.isSelfOrAncestor(WebInspector.currentFocusElement());
+        var shouldFocus = tab.view.hasFocus();
 
         this.suspendInvalidations();