Re-land 107645 with static initializers removed.

chrome/common/automation_messages_internal.h

Index: chrome/common/automation_messages_internal.h
diff --git a/chrome/common/automation_messages_internal.h b/chrome/common/automation_messages_internal.h
index 29aa8a8bcacd87a137086aa1772d7dcf3d132b6c..aa59612cd37fbfe767323b80456df1e1f82d99dc 100644
--- a/chrome/common/automation_messages_internal.h
+++ b/chrome/common/automation_messages_internal.h
@@ -1494,9 +1494,19 @@ IPC_SYNC_MESSAGE_CONTROL0_1(AutomationMsg_EndTracing,
 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 */,