Don't waste time on browser that crashed before connecting to the IPC channel.

chrome/common/automation_constants.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.
 
 #ifndef CHROME_COMMON_AUTOMATION_CONSTANTS_H__
 #define CHROME_COMMON_AUTOMATION_CONSTANTS_H__
 #pragma once
 
 namespace automation {
 
@@ skipping 53 matching lines @@
 
 // Used by AutomationProxy, declared here so that other headers don't need
 // to include automation_proxy.h.
 enum AutomationLaunchResult {
   AUTOMATION_LAUNCH_RESULT_INVALID = -1,
   AUTOMATION_SUCCESS,
   AUTOMATION_TIMEOUT,
   AUTOMATION_VERSION_MISMATCH,
   AUTOMATION_CREATE_TAB_FAILED,
   AUTOMATION_SERVER_CRASHED,
+  AUTOMATION_CHANNEL_ERROR,
 };
 
 enum AutomationMsg_NavigationResponseValues {
   AUTOMATION_MSG_NAVIGATION_ERROR = 0,
   AUTOMATION_MSG_NAVIGATION_SUCCESS,
   AUTOMATION_MSG_NAVIGATION_AUTH_NEEDED,
   AUTOMATION_MSG_NAVIGATION_BLOCKED_BY_MODAL_DIALOG,
 };
 
 // Used in the AutomationMsg_GetExtensionProperty to identify which extension
@@ skipping 13 matching lines @@
   SMALL_FONT = 12,
   MEDIUM_FONT = 16,
   LARGE_FONT = 24,
   LARGEST_FONT = 36
 };
 
 enum FindInPageDirection { BACK = 0, FWD = 1 };
 enum FindInPageCase { IGNORE_CASE = 0, CASE_SENSITIVE = 1 };
 
 #endif  // CHROME_COMMON_AUTOMATION_CONSTANTS_H__