Do not return FileSystem contents if the profile is in incognito mode.

webkit/browser/fileapi/file_system_url_request_job.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 "webkit/browser/fileapi/file_system_url_request_job.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 139 matching lines @@
   if (response_info_)
     return 200;
   return URLRequestJob::GetResponseCode();
 }
 
 void FileSystemURLRequestJob::StartAsync() {
   if (!request_)
     return;
   DCHECK(!reader_.get());
   url_ = file_system_context_->CrackURL(request_->url());
+  if (!file_system_context_->CanServeURLRequest(url_)) {
+    // In incognito mode the API is not usable and there should be no data.
+    NotifyFailed(net::ERR_FILE_NOT_FOUND);
+    return;
+  }
   file_system_context_->operation_runner()->GetMetadata(
       url_,
       base::Bind(&FileSystemURLRequestJob::DidGetMetadata,
                  weak_factory_.GetWeakPtr()));
 }
 
 void FileSystemURLRequestJob::DidGetMetadata(
     base::PlatformFileError error_code,
     const base::PlatformFileInfo& file_info) {
   if (error_code != base::PLATFORM_FILE_OK) {
@@ skipping 61 matching lines @@
   }
 
   return false;
 }
 
 void FileSystemURLRequestJob::NotifyFailed(int rv) {
   NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, rv));
 }
 
 }  // namespace fileapi