Make two IPC messages async.

chrome/test/automation/automation_messages_internal.h

 // Copyright (c) 2006-2008 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
@@ skipping 877 matching lines @@
   // On error, the returned handle value is 0.
   IPC_SYNC_MESSAGE_ROUTED0_1(AutomationMsg_FindNormalBrowserWindow, int)
 
   // This message requests the number of normal browser windows, i.e. normal
   // type and non-incognito mode that the app currently has open.  The return
   // value is the number of windows.
   IPC_SYNC_MESSAGE_ROUTED0_1(AutomationMsg_NormalBrowserWindowCount, int)
 
   // Used to put the browser into "extension automation mode" for the
   // current profile, or turn off the mode.
-  IPC_SYNC_MESSAGE_ROUTED1_0(AutomationMsg_SetEnableExtensionAutomation,
-                             bool /* true to enable extension automation */)
+  IPC_MESSAGE_ROUTED1(AutomationMsg_SetEnableExtensionAutomation,
+                      bool /* true to enable extension automation */)
 
   // This message tells the browser to start using the new proxy configuration
   // represented by the given JSON string. The parameters used in the JSON
   // string are defined in automation_constants.h.
-  IPC_SYNC_MESSAGE_ROUTED1_0(AutomationMsg_SetProxyConfig,
-                             std::string /* proxy_config_json_string */)
+  IPC_MESSAGE_ROUTED1(AutomationMsg_SetProxyConfig,
+                      std::string /* proxy_config_json_string */)
 
   // Sets Download Shelf visibility for the specified browser.
   IPC_SYNC_MESSAGE_ROUTED2_0(AutomationMsg_SetShelfVisibility,
                              int /* browser_handle */,
                              bool /* is_visible */)
 
   // This message requests the number of blocked popups in a certain tab with
   // the given handle. The return value is the number of blocked popups, or -1
   // if this request failed.
   IPC_SYNC_MESSAGE_ROUTED1_1(AutomationMsg_BlockedPopupCount,
@@ skipping 13 matching lines @@
                       int    /* the x coordinate for displaying the menu */,
                       int    /* the y coordinate for displaying the menu */,
                       int    /* align flags */)
 
   IPC_MESSAGE_ROUTED2(AutomationMsg_ForwardContextMenuCommandToChrome,
                       int /* tab_handle */,
                       int /* selected_command */)
 #endif  // OS_WIN
 
 IPC_END_MESSAGES(Automation)