[Ozone-Demo] Initialize a default keyboard layout

ui/ozone/demo/ozone_demo.cc

 // Copyright 2014 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 "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/timer/timer.h"
 #include "ui/events/event.h"
 #include "ui/events/keycodes/dom3/dom_code.h"
+#include "ui/events/ozone/layout/keyboard_layout_engine.h"
+#include "ui/events/ozone/layout/keyboard_layout_engine_manager.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/ozone/demo/gl_renderer.h"
 #include "ui/ozone/demo/software_renderer.h"
 #include "ui/ozone/demo/surfaceless_gl_renderer.h"
 #include "ui/ozone/public/ozone_platform.h"
 #include "ui/ozone/public/ozone_switches.h"
 #include "ui/ozone/public/ui_thread_gpu.h"
 #include "ui/platform_window/platform_window.h"
@@ skipping 107 matching lines @@
 
 int main(int argc, char** argv) {
   base::CommandLine::Init(argc, argv);
   base::AtExitManager exit_manager;
 
   // Build UI thread message loop. This is used by platform
   // implementations for event polling & running background tasks.
   base::MessageLoopForUI message_loop;
 
   ui::OzonePlatform::InitializeForUI();
+  ui::KeyboardLayoutEngineManager::GetKeyboardLayoutEngine()
+      ->SetCurrentLayoutByName("us");

[alexst (slow to review), 2015/01/13 21:41:31]

Is "us" a know string or is it just something that would fall back to default
because there is nothing available. Is there maybe a better way to say this is
the default one?

[dnicoara, 2015/01/13 21:46:04]

"us" is a known layout. The issue is there is no default layout installed when
running the demo so all key events are just ignored. On ChromeOS builds, CrOS
will set a layout, so this wouldn't be an issue. Kevin is looking at having a
default/fallback layout, but in the meantime I thought it may be useful to have
something.

 
   base::RunLoop run_loop;
 
   scoped_ptr<DemoWindow> window(new DemoWindow);
   window->Start(run_loop.QuitClosure());
 
   run_loop.Run();
 
   return 0;
 }