Remove implicit conversions from scoped_refptr to T* in mojo/

mojo/system/data_pipe_consumer_dispatcher.cc

Index: mojo/system/data_pipe_consumer_dispatcher.cc
diff --git a/mojo/system/data_pipe_consumer_dispatcher.cc b/mojo/system/data_pipe_consumer_dispatcher.cc
index 93515e968067af1e881c7e9c4461441990ad1b5e..2ca472602f54d14cc1429fc0aa05f3c5194ea075 100644
--- a/mojo/system/data_pipe_consumer_dispatcher.cc
+++ b/mojo/system/data_pipe_consumer_dispatcher.cc
@@ -15,7 +15,7 @@ DataPipeConsumerDispatcher::DataPipeConsumerDispatcher() {
 }
 
 void DataPipeConsumerDispatcher::Init(scoped_refptr<DataPipe> data_pipe) {
-  DCHECK(data_pipe);
+  DCHECK(data_pipe.get());
   data_pipe_ = data_pipe;
 }
 
@@ -25,7 +25,7 @@ Dispatcher::Type DataPipeConsumerDispatcher::GetType() const {
 
 DataPipeConsumerDispatcher::~DataPipeConsumerDispatcher() {
   // |Close()|/|CloseImplNoLock()| should have taken care of the pipe.
-  DCHECK(!data_pipe_);
+  DCHECK(!data_pipe_.get());
 }
 
 void DataPipeConsumerDispatcher::CancelAllWaitersNoLock() {