Be able to build cast_unittest and related targets in Chrome tree

media/cast/rtp_receiver/rtp_parser/rtp_parser_unittest.cc

Index: media/cast/rtp_receiver/rtp_parser/rtp_parser_unittest.cc
diff --git a/media/cast/rtp_receiver/rtp_parser/rtp_parser_unittest.cc b/media/cast/rtp_receiver/rtp_parser/rtp_parser_unittest.cc
index 71e6f501a52e5041f3a45b707a87a8127664f6b0..7360429749ad50524095f27023ff02e7c3b3164f 100644
--- a/media/cast/rtp_receiver/rtp_parser/rtp_parser_unittest.cc
+++ b/media/cast/rtp_receiver/rtp_parser/rtp_parser_unittest.cc
@@ -27,15 +27,15 @@ class RtpDataTest : public RtpData {
     expected_header_.reset(new RtpCastHeader());
   }
 
-  ~RtpDataTest() {}
+  virtual ~RtpDataTest() {}
 
   void SetExpectedHeader(const RtpCastHeader& cast_header) {
     memcpy(expected_header_.get(), &cast_header, sizeof(RtpCastHeader));
   }
 
-  void OnReceivedPayloadData(const uint8* payloadData,
-                             int payloadSize,
-                             const RtpCastHeader* rtpHeader) {
+  virtual void OnReceivedPayloadData(const uint8* payloadData,
+                                     int payloadSize,
+                                     const RtpCastHeader* rtpHeader) OVERRIDE {
     VerifyCommonHeader(*rtpHeader);
     VerifyCastHeader(*rtpHeader);
     // TODO(mikhal): Add data verification.
@@ -69,7 +69,7 @@ class RtpParserTest : public ::testing::Test {
     rtp_parser_.reset(new RtpParser(rtp_data_.get(), config_));
   }
 
-  ~RtpParserTest() {}
+  virtual ~RtpParserTest() {}
 
   virtual void SetUp() {
     cast_header_.InitRTPVideoHeaderCast();