Fix compilation error due to removal of implicit scoped_refptr to ptr conversion.

components/cronet/android/wrapped_channel_upload_element_reader.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/cronet/android/wrapped_channel_upload_element_reader.h"
 
 #include "base/android/jni_android.h"
 #include "base/logging.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
@@ skipping 23 matching lines @@
 }
 
 bool WrappedChannelElementReader::IsInMemory() const {
   return false;
 }
 
 int WrappedChannelElementReader::Read(net::IOBuffer* buf,
                                       int buf_length,
                                       const net::CompletionCallback& callback) {
   DCHECK(!callback.is_null());
-  DCHECK(delegate_);
+  DCHECK(delegate_.get());
   // TODO(mef): Post the read to file thread.
   int bytes_read = delegate_->ReadFromUploadChannel(buf, buf_length);
   if (bytes_read < 0)
     return net::ERR_FAILED;
   offset_ += bytes_read;
   return bytes_read;
 }
 
 }  // namespace cronet