Add InputEvent and EventPacket types for batched input delivery

content/common/input/input_event_disposition.h

+// Copyright (c) 2013 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 CONTENT_COMMON_INPUT_INPUT_EVENT_DISPOSITION_H_
+#define CONTENT_COMMON_INPUT_INPUT_EVENT_DISPOSITION_H_
+
+#include "content/common/content_export.h"
+#include "content/port/common/input_event_ack_state.h"
+
+namespace content {
+
+// Disposition of input events as they are handled and passed between the
+// browser and renderer.
+enum InputEventDisposition {
+  INPUT_EVENT_UNHANDLED,
+  INPUT_EVENT_COULD_NOT_DELIVER,
+
+  INPUT_EVENT_IMPL_THREAD_CONSUMED,
+  INPUT_EVENT_IMPL_THREAD_BOUNCE_TO_MAIN,
+  INPUT_EVENT_IMPL_THREAD_NO_CONSUMER_EXISTS,
+
+  INPUT_EVENT_MAIN_THREAD_CONSUMED,
+  INPUT_EVENT_MAIN_THREAD_PREVENT_DEFAULTED,
+  INPUT_EVENT_MAIN_THREAD_NOT_PREVENT_DEFAULTED,
+  INPUT_EVENT_MAIN_THREAD_NO_CONSUMER_EXISTS
+};
+
+InputEventDisposition CONTENT_EXPORT ToDisposition(InputEventAckState ack,
+                                                   bool main_thread,
+                                                   bool prevent_default);
+InputEventAckState CONTENT_EXPORT ToAckState(InputEventDisposition disposition);
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_INPUT_INPUT_EVENT_DISPOSITION_H_