Re-land 107645 with static initializers removed.

chrome/common/automation_messages_internal.h

 // 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.
 
 // Defines the IPC messages used by the automation interface.
 
 // NOTE: All IPC messages have either a routing_id of 0 (for asynchronous
 //       messages), or one that's been assigned by the proxy (for calls
 //       which expect a response).  The routing_id shouldn't be used for
 //       any other purpose in these message types.
@@ skipping 1476 matching lines @@
 IPC_SYNC_MESSAGE_CONTROL0_1(AutomationMsg_EndTracing,
                             bool /* success */)
 
 // Retrieve trace event data (called after EndTracing). Must keep calling until
 // remaining_chunks is 0.
 // TODO(jbates): See bug 100255, IPC send fails if message is too big. This
 // code can be removed if that limitation is fixed.
 IPC_SYNC_MESSAGE_CONTROL0_2(AutomationMsg_GetTracingOutput,
                             std::string /* trace_chunk */,
                             int /* remaining_chunks */)
+// Browser -> renderer messages.
+
+// Requests a snapshot.
+IPC_MESSAGE_ROUTED0(AutomationMsg_SnapshotEntirePage)
 
 // Renderer -> browser messages.
 
+// Sent as a response to |AutomationMsg_Snapshot|.
+IPC_MESSAGE_ROUTED3(AutomationMsg_SnapshotEntirePageACK,
+                    bool /* success */,
+                    std::vector<unsigned char> /* png bytes */,
+                    std::string /* error message */)
+
 // Sent when the renderer has scheduled a client redirect to occur.
 IPC_MESSAGE_ROUTED2(AutomationMsg_WillPerformClientRedirect,
                     int64 /* frame_id */,
                     double /* # of seconds till redirect will be performed */)
 
 // Sent when the renderer has completed or canceled a client redirect for a
 // particular frame. This message may be sent multiple times for the same
 // redirect.
 IPC_MESSAGE_ROUTED1(AutomationMsg_DidCompleteOrCancelClientRedirect,
                     int64 /* frame_id */)
 
 
 // YOUR NEW MESSAGE MIGHT NOT BELONG HERE.
 // This is the section for renderer -> browser automation messages. If it is
 // an automation <-> browser message, put it above this section.