GData save package support with MHTML.

chrome/browser/chromeos/gdata/gdata_file_system.cc

 // Copyright (c) 2012 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/chromeos/gdata/gdata_file_system.h"
 
 #include <errno.h>
 
 #include <utility>
 
@@ skipping 554 matching lines @@
                                    const FileOperationCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   base::AutoLock lock(lock_);
   // Make sure the destination directory exists
   GDataFileBase* dest_dir = GetGDataFileInfoFromPath(
       remote_dest_file_path.DirName());
   if (!dest_dir || !dest_dir->AsGDataDirectory()) {
     base::MessageLoopProxy::current()->PostTask(FROM_HERE,
         base::Bind(callback, base::PLATFORM_FILE_ERROR_NOT_FOUND));
+    NOTREACHED();
     return;
   }
 
   std::string* resource_id = new std::string;
   BrowserThread::PostTaskAndReply(
       BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&GDataFileSystem::GetDocumentResourceIdOnIOThreadPool,
                  local_file_path,
                  resource_id),
@@ skipping 2983 matching lines @@
   const bool posted = BrowserThread::PostTask(
       BrowserThread::FILE,
       from_here,
       base::Bind(&GDataFileSystem::RunTaskOnIOThreadPool,
                  base::Unretained(this),
                  task));
   DCHECK(posted);
 }
 
 }  // namespace gdata