Wired GDataFileSystem::GetFile() method with internal cache.

chrome/browser/chromeos/gdata/gdata_file_system_proxy.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_proxy.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/platform_file.h"
@@ skipping 172 matching lines @@
   }
 
   file_system_->CreateDirectory(file_path, exclusive, recursive, callback);
 }
 
 void GDataFileSystemProxy::CreateSnapshotFile(
     const GURL& file_url,
     const FileSystemOperationInterface::SnapshotFileCallback& callback) {
   FilePath file_path;
   base::PlatformFileInfo file_info;
+  GDataFileProperties file_properties;
   if (!ValidateUrl(file_url, &file_path) ||
-      !file_system_->GetFileInfoFromPath(file_path, &file_info)) {
+      !file_system_->GetFileInfoFromPath(file_path, &file_properties)) {
     MessageLoopProxy::current()->PostTask(FROM_HERE,
          base::Bind(callback,
                     base::PLATFORM_FILE_ERROR_NOT_FOUND,
                     base::PlatformFileInfo(),
                     FilePath(),
                     scoped_refptr<ShareableFileReference>(NULL)));
     return;
   }
 
   file_system_->GetFile(file_path,
                         base::Bind(&CallSnapshotFileCallback,
                                    callback,
-                                   file_info));
+                                   file_properties.file_info));
 }
 
 // static.
 bool GDataFileSystemProxy::ValidateUrl(const GURL& url, FilePath* file_path) {
   // what platform you're on.
   FilePath raw_path;
   fileapi::FileSystemType type = fileapi::kFileSystemTypeUnknown;
   if (!fileapi::CrackFileSystemURL(url, NULL, &type, file_path) ||
       type != fileapi::kFileSystemTypeExternal) {
     return false;
@@ skipping 52 matching lines @@
   }
 
   proxy->PostTask(FROM_HERE,
                   base::Bind(callback,
                              base::PLATFORM_FILE_OK,
                              entries,
                              false));
 }
 
 }  // namespace gdata