Make sure the scoped_ptr is set before checking if the file is open. Fixes a ...

chrome/browser/plugin_process_host.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #include "chrome/browser/plugin_process_host.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
@@ skipping 99 matching lines @@
       download_file_buffer_(new net::IOBuffer(kDownloadFileBufferSize)),
       download_file_caller_window_(caller_window),
       download_url_(download_url),
       download_source_pid_(source_pid) {
 #if defined(OS_WIN)
   DCHECK(::IsWindow(caller_window));
 #else
   // TODO(port): Some window verification for mac and linux.
 #endif
   memset(download_file_buffer_->data(), 0, kDownloadFileBufferSize);
+  download_file_.reset(new net::FileStream());
 }
 
 PluginDownloadUrlHelper::~PluginDownloadUrlHelper() {
   if (download_file_request_) {
     delete download_file_request_;
     download_file_request_ = NULL;
   }
 }
 
 void PluginDownloadUrlHelper::InitiateDownload() {
@@ skipping 20 matching lines @@
   URLRequest::Delegate::OnSSLCertificateError(request, cert_error, cert);
   DownloadCompletedHelper(false);
 }
 
 void PluginDownloadUrlHelper::OnResponseStarted(URLRequest* request) {
   if (!download_file_->IsOpen()) {
     file_util::GetTempDir(&download_file_path_);
 
     GURL request_url = request->url();
 #if defined(OS_WIN)
-    download_file_path_.Append(UTF8ToWide(request_url.ExtractFileName()));
+    download_file_path_ = download_file_path_.Append(
+        UTF8ToWide(request_url.ExtractFileName()));
 #else
-    download_file_path_.Append(request_url.ExtractFileName());
+    download_file_path_ = download_file_path_.Append(
+        request_url.ExtractFileName());
 #endif
 
     download_file_->Open(download_file_path_,
                          base::PLATFORM_FILE_CREATE_ALWAYS |
                          base::PLATFORM_FILE_READ | base::PLATFORM_FILE_WRITE);
     if (!download_file_->IsOpen()) {
       NOTREACHED();
       OnDownloadCompleted(request);
       return;
     }
@@ skipping 615 matching lines @@
 }
 
 void PluginProcessHost::Shutdown() {
 #if defined(OS_WIN)
   Send(new PluginProcessMsg_BrowserShutdown);
 #else
   // TODO(port): Port plugin_messages_internal.h.
   NOTIMPLEMENTED();
 #endif
 }