Fix crash caused by NULL response_headers passed to StreamHandleImpl

content/browser/streams/stream_handle_impl.cc

Index: content/browser/streams/stream_handle_impl.cc
diff --git a/content/browser/streams/stream_handle_impl.cc b/content/browser/streams/stream_handle_impl.cc
index d07c1438936074ecb26c4f67535893026f9dfdf8..949e2fbf78ad56f6cf292caaf9486f40140e50dd 100644
--- a/content/browser/streams/stream_handle_impl.cc
+++ b/content/browser/streams/stream_handle_impl.cc
@@ -30,11 +30,15 @@ StreamHandleImpl::StreamHandleImpl(
       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,