Fix crash caused by NULL response_headers passed to StreamHandleImpl

content/browser/streams/stream_handle_impl.cc

 // Copyright (c) 2013 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/browser/streams/stream_handle_impl.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "content/browser/streams/stream.h"
@@ skipping 12 matching lines @@
 
 StreamHandleImpl::StreamHandleImpl(
     const base::WeakPtr<Stream>& stream,
     const GURL& original_url,
     const std::string& mime_type,
     scoped_refptr<net::HttpResponseHeaders> response_headers)
     : stream_(stream),
       url_(stream->url()),
       original_url_(original_url),
       mime_type_(mime_type),
-      // Make a copy of the response headers so it is safe to pass this across
-      // threads.
-      response_headers_(
-          new net::HttpResponseHeaders(response_headers->raw_headers())),
-      stream_message_loop_(base::MessageLoopProxy::current().get()) {}
+      response_headers_(NULL),
+      stream_message_loop_(base::MessageLoopProxy::current().get()) {
+  // Make a copy of the response headers so it is safe to pass this across
+  // threads.
+  if (response_headers.get()) {
+    response_headers_ =
+        new net::HttpResponseHeaders(response_headers->raw_headers());
+  }
+}
 
 StreamHandleImpl::~StreamHandleImpl() {
   stream_message_loop_->PostTaskAndReply(FROM_HERE,
       base::Bind(&Stream::CloseHandle, stream_),
       base::Bind(&RunCloseListeners, close_listeners_));
 }
 
 const GURL& StreamHandleImpl::GetURL() {
   return url_;
 }
 
 const GURL& StreamHandleImpl::GetOriginalURL() {
   return original_url_;
 }
 
 const std::string& StreamHandleImpl::GetMimeType() {
   return mime_type_;
 }
 
 scoped_refptr<net::HttpResponseHeaders> StreamHandleImpl::GetResponseHeaders() {
   return response_headers_;
 }
 
 void StreamHandleImpl::AddCloseListener(const base::Closure& callback) {
   close_listeners_.push_back(callback);
 }
 
 }  // namespace content