Remove implicit conversions from scoped_refptr to T* in ppapi/

ppapi/proxy/resource_reply_thread_registrar.cc

Index: ppapi/proxy/resource_reply_thread_registrar.cc
diff --git a/ppapi/proxy/resource_reply_thread_registrar.cc b/ppapi/proxy/resource_reply_thread_registrar.cc
index 0c49cf5c7b5fe6fa2b3a862a7f1f506a7b01e895..13329872aa17c037133ecfd85422e7eca33bc7c2 100644
--- a/ppapi/proxy/resource_reply_thread_registrar.cc
+++ b/ppapi/proxy/resource_reply_thread_registrar.cc
@@ -27,7 +27,7 @@ void ResourceReplyThreadRegistrar::Register(
   ProxyLock::AssertAcquiredDebugOnly();
 
   // Use the default thread if |reply_thread_hint| is NULL or blocking.
-  if (!reply_thread_hint || reply_thread_hint->is_blocking())
+  if (!reply_thread_hint.get() || reply_thread_hint->is_blocking())
     return;
 
   DCHECK(reply_thread_hint->target_loop());
@@ -36,7 +36,7 @@ void ResourceReplyThreadRegistrar::Register(
   {
     base::AutoLock auto_lock(lock_);
 
-    if (reply_thread == default_thread_)
+    if (reply_thread.get() == default_thread_.get())
       return;
 
     map_[resource][sequence_number] = reply_thread;