Eliminate implicit conversion from scoped_refptr<T> to T*

webkit/plugins/npapi/plugin_instance.cc

Index: webkit/plugins/npapi/plugin_instance.cc
diff --git a/webkit/plugins/npapi/plugin_instance.cc b/webkit/plugins/npapi/plugin_instance.cc
index f26cbec67e55abfe8d767c60e63039af1b727a7c..3b367b24e40b37a6b20db7a19cad3ea10d07ba1e 100644
--- a/webkit/plugins/npapi/plugin_instance.cc
+++ b/webkit/plugins/npapi/plugin_instance.cc
@@ -97,7 +97,7 @@ void PluginInstance::AddStream(PluginStream* stream) {
   open_streams_.push_back(make_scoped_refptr(stream));
 }
 
-void PluginInstance::RemoveStream(PluginStream* stream) {
+void PluginInstance::RemoveStream(scoped_refptr<PluginStream> stream) {
   if (in_close_streams_)
     return;
 
@@ -547,7 +547,7 @@ void PluginInstance::RequestRead(NPStream* stream, NPByteRange* range_list) {
   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
   for (stream_index = open_streams_.begin();
           stream_index != open_streams_.end(); ++stream_index) {
-    PluginStream* plugin_stream = *stream_index;
+    scoped_refptr<PluginStream> plugin_stream = *stream_index;
     if (plugin_stream->stream() == stream) {
       // A stream becomes seekable the first time NPN_RequestRead
       // is called on it.
@@ -668,7 +668,7 @@ void PluginInstance::URLRedirectResponse(bool allow, void* notify_data) {
   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
   for (stream_index = open_streams_.begin();
           stream_index != open_streams_.end(); ++stream_index) {
-    PluginStream* plugin_stream = *stream_index;
+    scoped_refptr<PluginStream> plugin_stream = *stream_index;
     if (plugin_stream->notify_data() == notify_data) {
       WebPluginResourceClient* resource_client =
           plugin_stream->AsResourceClient();