Plumb input events into SkyView

sky/engine/core/view/EventCallback.h

Index: sky/engine/core/view/EventCallback.h
diff --git a/sky/engine/core/view/EventCallback.h b/sky/engine/core/view/EventCallback.h
new file mode 100644
index 0000000000000000000000000000000000000000..e8fbec2c476a227da53dae269fdd39e13680545f
--- /dev/null
+++ b/sky/engine/core/view/EventCallback.h
@@ -0,0 +1,19 @@
+// Copyright 2015 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.
+
+#ifndef SKY_ENGINE_CORE_VIEW_EVENTCALLBACK_H_
+#define SKY_ENGINE_CORE_VIEW_EVENTCALLBACK_H_
+
+namespace blink {
+class Event;
+
+class EventCallback {
+public:
+    virtual ~EventCallback() { }
+    virtual bool handleEvent(Event* event) = 0;
+};
+
+}
+
+#endif  // SKY_ENGINE_CORE_VIEW_EVENTCALLBACK_H_