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

webkit/browser/fileapi/file_system_context.cc

Index: webkit/browser/fileapi/file_system_context.cc
diff --git a/webkit/browser/fileapi/file_system_context.cc b/webkit/browser/fileapi/file_system_context.cc
index b7fbf681da6878ca213f6588ca20dbfeeb590a42..26a48d49a3ca7451d89969acb833c1c05dfb7f78 100644
--- a/webkit/browser/fileapi/file_system_context.cc
+++ b/webkit/browser/fileapi/file_system_context.cc
@@ -120,6 +120,7 @@ FileSystemContext::FileSystemContext(
       additional_backends_(additional_backends.Pass()),
       external_mount_points_(external_mount_points),
       partition_path_(partition_path),
+      is_incognito_(options.is_incognito()),
       operation_runner_(new FileSystemOperationRunner(this)) {
   RegisterBackend(sandbox_backend_.get());
   RegisterBackend(isolated_backend_.get());
@@ -349,6 +350,18 @@ void FileSystemContext::EnableTemporaryFileSystemInIncognito() {
 }
 #endif
 
+bool FileSystemContext::CanServeURLRequest(const FileSystemURL& url) const {
+  if (!is_incognito_)
+    return true;
+#if defined(OS_CHROMEOS) && defined(GOOGLE_CHROME_BUILD)
+  if (url.type() == kFileSystemTypeTemporary &&
+      sandbox_backend_->enable_temporary_file_system_in_incognito()) {
+    return true;
+  }
+#endif
+  return false;
+}
+
 FileSystemContext::~FileSystemContext() {
 }