Add chrome.windows.update({focused:true});

chrome/browser/extensions/extension_tabs_module.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/extensions/extension_tabs_module.h"
 
 #include "base/base64.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
@@ skipping 431 matching lines @@
         &bounds_val));
     bounds.set_width(bounds_val);
   }
 
   if (update_props->HasKey(keys::kHeightKey)) {
     EXTENSION_FUNCTION_VALIDATE(update_props->GetInteger(
         keys::kHeightKey,
         &bounds_val));
     bounds.set_height(bounds_val);
   }
+  browser->window()->SetBounds(bounds);
 
-  browser->window()->SetBounds(bounds);
+  bool selected_val = false;
+  if (update_props->HasKey(keys::kFocusedKey)) {
+    EXTENSION_FUNCTION_VALIDATE(update_props->GetBoolean(
+        keys::kFocusedKey, &selected_val));
+    if (selected_val)
+      browser->window()->Activate();
+    else
+      browser->window()->Deactivate();
+  }
+
   result_.reset(ExtensionTabUtil::CreateWindowValue(browser, false));
 
   return true;
 }
 
 bool RemoveWindowFunction::RunImpl() {
   int window_id;
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &window_id));
 
   Browser* browser = GetBrowserInProfileWithId(profile(), window_id,
@@ skipping 654 matching lines @@
 }
 
 static GURL ResolvePossiblyRelativeURL(std::string url_string,
                                        Extension* extension) {
   GURL url = GURL(url_string);
   if (!url.is_valid())
     url = extension->GetResourceURL(url_string);
 
   return url;
 }