aura: Gesture event plumbing (skeleton).

ui/aura/demo/demo_main.cc

Index: ui/aura/demo/demo_main.cc
diff --git a/ui/aura/demo/demo_main.cc b/ui/aura/demo/demo_main.cc
index 817ec7f79c8e33df4351815b6a1ecff22f1ea1b5..35ee2df99381c3695ff9b4a13a932612cec42315 100644
--- a/ui/aura/demo/demo_main.cc
+++ b/ui/aura/demo/demo_main.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -53,6 +53,9 @@ class DemoWindowDelegate : public aura::WindowDelegate {
   virtual ui::TouchStatus OnTouchEvent(aura::TouchEvent* event) OVERRIDE {
     return ui::TOUCH_STATUS_END;
   }
+  virtual ui::GestureStatus OnGestureEvent(aura::GestureEvent* event) OVERRIDE {
+    return ui::GESTURE_STATUS_UNKNOWN;
+  }
   virtual bool CanFocus() OVERRIDE { return true; }
   virtual void OnCaptureLost() OVERRIDE {}
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {