Support WebView in ash.

content/shell/shell_download_manager_delegate.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 "content/shell/shell_download_manager_delegate.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <commdlg.h>
 #endif
@@ skipping 87 matching lines @@
     return;
   download->SetFileCheckResults(state);
   download_manager_->RestartDownload(download_id);
 }
 
 void ShellDownloadManagerDelegate::ChooseDownloadPath(
     WebContents* web_contents,
     const FilePath& suggested_path,
     int32 download_id) {
   FilePath result;
-#if defined(OS_WIN)
+#if defined(OS_WIN) && !defined(USE_AURA)
   std::wstring file_part = FilePath(suggested_path).BaseName().value();
   wchar_t file_name[MAX_PATH];
   base::wcslcpy(file_name, file_part.c_str(), arraysize(file_name));
   OPENFILENAME save_as;
   ZeroMemory(&save_as, sizeof(save_as));
   save_as.lStructSize = sizeof(OPENFILENAME);
   save_as.hwndOwner = web_contents->GetNativeView();
   save_as.lpstrFile = file_name;
   save_as.nMaxFile = arraysize(file_name);
 
@@ skipping 12 matching lines @@
 #endif
 
   if (result.empty()) {
     download_manager_->FileSelectionCanceled(download_id);
   } else {
     download_manager_->FileSelected(result, download_id);
   }
 }
 
 }  // namespace content