aura: Detect double clicks and set ui::EF_IS_DOUBLE_CLICK appropriately.

content/browser/renderer_host/web_input_event_aurax11.cc

 // Copyright (c) 2011 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.
 
 // Portions based heavily on:
 // third_party/WebKit/Source/WebKit/chromium/public/gtk/WebInputEventFactory.cpp
 //
 /*
  * Copyright (C) 2006-2011 Google Inc. All rights reserved.
  *
@@ skipping 297 matching lines @@
   webkit_event.modifiers = XStateToWebEventModifiers(native_key_event->state);
 
   switch (native_event->type) {
     case KeyPress:
       webkit_event.type = event->is_char() ? WebKit::WebInputEvent::Char :
           WebKit::WebInputEvent::RawKeyDown;
       break;
     case KeyRelease:
       webkit_event.type = WebKit::WebInputEvent::KeyUp;
       break;
-    case GenericEvent:
-      // TODO(sadrul): touch!
-      break;
     default:
       NOTREACHED();
   }
 
   if (webkit_event.modifiers & WebKit::WebInputEvent::AltKey)
     webkit_event.isSystemKey = true;
 
   webkit_event.windowsKeyCode = XKeyEventToWindowsKeyCode(native_key_event);
   webkit_event.nativeKeyCode = native_key_event->keycode;
 
@@ skipping 81 matching lines @@
   }
 
   // Update the type of the touch event.
   web_event->type = TouchEventTypeFromEvent(event);
   web_event->timeStampSeconds = event->time_stamp().ToDoubleT();
 
   return point;
 }
 
 }  // namespace content