[Extensions] Kill off ExtensionMsg_AddMessageToConsole

extensions/common/extension_messages.h

 // Copyright 2014 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.
 
 // IPC messages for extensions.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
@@ skipping 537 matching lines @@
 
 // Dispatch the Port.onDisconnect event for message channels.
 IPC_MESSAGE_ROUTED2(ExtensionMsg_DispatchOnDisconnect,
                     int /* port_id */,
                     std::string /* error_message */)
 
 // Informs the renderer what channel (dev, beta, stable, etc) is running.
 IPC_MESSAGE_CONTROL1(ExtensionMsg_SetChannel,
                      int /* channel */)
 
-// Adds a logging message to the renderer's root frame DevTools console.
-IPC_MESSAGE_ROUTED2(ExtensionMsg_AddMessageToConsole,
-                    content::ConsoleMessageLevel /* level */,
-                    std::string /* message */)
-
 // Notify the renderer that its window has closed.
 IPC_MESSAGE_ROUTED0(ExtensionMsg_AppWindowClosed)
 
 // Notify the renderer that an extension wants notifications when certain
 // searches match the active page.  This message replaces the old set of
 // searches, and triggers ExtensionHostMsg_OnWatchedPageChange messages from
 // each tab to keep the browser updated about changes.
 IPC_MESSAGE_CONTROL1(ExtensionMsg_WatchPages,
                      std::vector<std::string> /* CSS selectors */)
 
@@ skipping 221 matching lines @@
                     int /* acc_obj_id */,
                     base::string16 /* selector */)
 
 // Result of a query selector request.
 // result_acc_obj_id is the accessibility tree ID of the result element; 0
 // indicates no result.
 IPC_MESSAGE_ROUTED3(ExtensionHostMsg_AutomationQuerySelector_Result,
                     int /* request_id */,
                     ExtensionHostMsg_AutomationQuerySelector_Error /* error */,
                     int /* result_acc_obj_id */)