Add InputEvent and EventPacket types for batched input delivery

content/common/input_messages.h

Index: content/common/input_messages.h
diff --git a/content/common/input_messages.h b/content/common/input_messages.h
index 2a7020ebf75f7c2ea9c910d64b9bdb75c63c6388..6ef8f89c62edc50b5551ac385fabe13690714d10 100644
--- a/content/common/input_messages.h
+++ b/content/common/input_messages.h
@@ -10,6 +10,9 @@
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/edit_command.h"
+#include "content/common/input/input_param_traits.h"
+#include "content/common/input/event_packet.h"
+#include "content/common/input/event_packet_ack.h"
 #include "content/port/common/input_event_ack_state.h"
 #include "content/public/common/common_param_traits.h"
 #include "ipc/ipc_message_macros.h"
@@ -40,6 +43,10 @@ IPC_MESSAGE_ROUTED3(InputMsg_HandleInputEvent,
                     ui::LatencyInfo /* latency_info */,
                     bool /* is_keyboard_shortcut */)
 
+// Sends an event packet to the render widget.
+IPC_MESSAGE_ROUTED1(InputMsg_HandleEventPacket,
+                    content::EventPacket /* event_packet */)
+
 // Sends the cursor visibility state to the render widget.
 IPC_MESSAGE_ROUTED1(InputMsg_CursorVisibilityChange,
                     bool /* is_visible */)
@@ -131,6 +138,9 @@ IPC_MESSAGE_ROUTED3(InputHostMsg_HandleInputEvent_ACK,
                     content::InputEventAckState /* ack_result */,
                     ui::LatencyInfo /* latency_info */)
 
+IPC_MESSAGE_ROUTED1(InputHostMsg_HandleEventPacket_ACK,
+                    content::EventPacketAck /* event_packet_ack */)
+
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent InputMsg, then ifdefs for platform specific InputMsg, then