Make Widget::Show() creates active windows.

ui/views/win/hwnd_message_handler.cc

 // Copyright (c) 2012 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 "ui/views/win/hwnd_message_handler.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include "base/bind.h"
@@ skipping 541 matching lines @@
                SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
 }
 
 void HWNDMessageHandler::StackAtTop() {
   SetWindowPos(hwnd(), HWND_TOP, 0, 0, 0, 0,
                SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
 }
 
 void HWNDMessageHandler::Show() {
   if (IsWindow(hwnd()))
-    ShowWindowWithState(ui::SHOW_STATE_INACTIVE);
+    ShowWindowWithState(ui::SHOW_STATE_NORMAL);
 }
 
 void HWNDMessageHandler::ShowWindowWithState(ui::WindowShowState show_state) {
   TRACE_EVENT0("views", "HWNDMessageHandler::ShowWindowWithState");
   DWORD native_show_state;
   switch (show_state) {
     case ui::SHOW_STATE_INACTIVE:
       native_show_state = SW_SHOWNOACTIVATE;
       break;
     case ui::SHOW_STATE_MAXIMIZED:
@@ skipping 1668 matching lines @@
   SetMsgHandled(FALSE);
 }
 
 void HWNDMessageHandler::HandleTouchEvents(const TouchEvents& touch_events) {
   base::WeakPtr<HWNDMessageHandler> ref(weak_factory_.GetWeakPtr());
   for (size_t i = 0; i < touch_events.size() && ref; ++i)
     delegate_->HandleTouchEvent(touch_events[i]);
 }
 
 }  // namespace views