This adds some plumbing for propagating the reason for a renderer's death

chrome/browser/profile_import_process_host.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/profile_import_process_host.h"
 
 #include "app/l10n_util.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
@@ skipping 109 matching lines @@
 
 void ProfileImportProcessHost::OnMessageReceived(const IPC::Message& message) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   BrowserThread::PostTask(
       thread_id_, FROM_HERE,
       NewRunnableMethod(import_process_client_.get(),
                         &ImportProcessClient::OnMessageReceived,
                         message));
 }
 
-void ProfileImportProcessHost::OnProcessCrashed() {
+void ProfileImportProcessHost::OnProcessCrashed(int exit_code) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   BrowserThread::PostTask(
       thread_id_, FROM_HERE,
       NewRunnableMethod(import_process_client_.get(),
-                        &ImportProcessClient::OnProcessCrashed));
+                        &ImportProcessClient::OnProcessCrashed,
+                        exit_code));
 }
 
 bool ProfileImportProcessHost::CanShutdown() {
   return true;
 }
 
 URLRequestContext* ProfileImportProcessHost::GetRequestContext(
     uint32 request_id,
     const ViewHostMsg_Resource_Request& request_data) {
   return NULL;
@@ skipping 30 matching lines @@
     IPC_MESSAGE_HANDLER(ProfileImportProcessHostMsg_NotifyFavIconsImportStart,
                         ImportProcessClient::OnFavIconsImportStart)
     IPC_MESSAGE_HANDLER(ProfileImportProcessHostMsg_NotifyFavIconsImportGroup,
                         ImportProcessClient::OnFavIconsImportGroup)
     IPC_MESSAGE_HANDLER(ProfileImportProcessHostMsg_NotifyPasswordFormReady,
                         ImportProcessClient::OnPasswordFormImportReady)
     IPC_MESSAGE_HANDLER(ProfileImportProcessHostMsg_NotifyKeywordsReady,
                         ImportProcessClient::OnKeywordsImportReady)
   IPC_END_MESSAGE_MAP_EX()
 }