Style fixes for cast_unittest to build

media/cast/rtp_sender/rtp_packetizer/rtp_packetizer_unittest.cc

 // Copyright 2013 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 "media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.h"
 
 #include <gtest/gtest.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "media/cast/cast_config.h"
@@ skipping 95 matching lines @@
        packet_storage_(kMaxPacketStorageTimeMs) {
     config_.sequence_number = kSeqNum;
     config_.ssrc = kSsrc;
     config_.payload_type = kPayload;
     config_.max_payload_length = kMaxPacketLength;
     transport_.reset(new TestRtpPacketTransport(config_));
     rtp_packetizer_.reset(
         new RtpPacketizer(transport_.get(), &packet_storage_, config_));
   }
 
-  ~RtpPacketizerTest() {}
+  virtual ~RtpPacketizerTest() {}
 
-  void SetUp() {
+  virtual void SetUp() {
     video_frame_.key_frame = false;
     video_frame_.last_referenced_frame_id = 255;
     video_frame_.data.assign(kFrameSize, 123);
   }
 
   scoped_ptr<RtpPacketizer> rtp_packetizer_;
   RtpPacketizerConfig config_;
   scoped_ptr<TestRtpPacketTransport> transport_;
   EncodedVideoFrame video_frame_;
   PacketStorage packet_storage_;
@@ skipping 17 matching lines @@
 
   base::TimeTicks time;
   time += base::TimeDelta::FromMilliseconds(kTimestampMs);
   rtp_packetizer_->IncomingEncodedVideoFrame(&video_frame_, time);
   EXPECT_EQ(expected_num_of_packets, rtp_packetizer_->send_packets_count());
   EXPECT_EQ(kFrameSize, rtp_packetizer_->send_octet_count());
 }
 
 }  // namespace cast
 }  // namespace media