Pass needLocalPath flag to file chooser dialog.

chrome/browser/file_select_helper.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/file_select_helper.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 395 matching lines @@
   // difficult for callers to know how long to keep a reference to this
   // instance. We AddRef() here to keep the instance alive after we return
   // to the caller, until the last callback is received from the file dialog.
   // At that point, we must call RunFileChooserEnd().
   AddRef();
 }
 
 void FileSelectHelper::RunFileChooserOnFileThread(
     const FileChooserParams& params) {
   select_file_types_ = GetFileTypesFromAcceptType(params.accept_types);
+  select_file_types_->support_drive = !params.need_local_path;
 
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&FileSelectHelper::RunFileChooserOnUIThread, this, params));
 }
 
 void FileSelectHelper::RunFileChooserOnUIThread(
     const FileChooserParams& params) {
   if (!render_view_host_ || !web_contents_) {
     // If the renderer was destroyed before we started, just cancel the
@@ skipping 134 matching lines @@
   // of an extension or a "/" in the case of a MIME type).
   std::string unused;
   if (accept_type.length() <= 1 ||
       base::StringToLowerASCII(accept_type) != accept_type ||
       base::TrimWhitespaceASCII(accept_type, base::TRIM_ALL, &unused) !=
           base::TRIM_NONE) {
     return false;
   }
   return true;
 }