Update ppapi/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

ppapi/proxy/ppb_message_loop_proxy.cc

Index: ppapi/proxy/ppb_message_loop_proxy.cc
diff --git a/ppapi/proxy/ppb_message_loop_proxy.cc b/ppapi/proxy/ppb_message_loop_proxy.cc
index fb01485fa6a20a63c618e83b136a3576be985340..63d465a9fd91ef3cf5d7925f7a154446e1f7cb16 100644
--- a/ppapi/proxy/ppb_message_loop_proxy.cc
+++ b/ppapi/proxy/ppb_message_loop_proxy.cc
@@ -177,10 +177,9 @@ void MessageLoopResource::PostClosure(
     const tracked_objects::Location& from_here,
     const base::Closure& closure,
     int64 delay_ms) {
-  if (loop_proxy_) {
-    loop_proxy_->PostDelayedTask(from_here,
-                                 closure,
-                                 base::TimeDelta::FromMilliseconds(delay_ms));
+  if (loop_proxy_.get()) {
+    loop_proxy_->PostDelayedTask(
+        from_here, closure, base::TimeDelta::FromMilliseconds(delay_ms));
   } else {
     TaskInfo info;
     info.from_here = FROM_HERE;