sky-scrollable should use a reasonable fling curve

sky/engine/core/events/KeyboardEvent.cpp

Index: sky/engine/core/events/KeyboardEvent.cpp
diff --git a/sky/engine/core/events/KeyboardEvent.cpp b/sky/engine/core/events/KeyboardEvent.cpp
index dde48ac3facccfae9d19222e14fb758685799d25..08dbe7174f78964ddf63bd1e15ee4279aadd60eb 100644
--- a/sky/engine/core/events/KeyboardEvent.cpp
+++ b/sky/engine/core/events/KeyboardEvent.cpp
@@ -60,6 +60,8 @@ KeyboardEvent::KeyboardEvent(const WebKeyboardEvent& event)
     , m_metaKey(event.modifiers & WebInputEvent::MetaKey)
     , m_repeat(event.modifiers & WebInputEvent::IsAutoRepeat)
 {
+    m_timeStamp = event.timeStampMS;
+
     if (event.type == WebInputEvent::KeyDown || event.type == WebInputEvent::KeyUp) {
         m_charCode = 0;
     } else if (event.type == WebInputEvent::Char) {