Fix code style and gyp files in cast to build cast_unittest

media/cast/rtcp/rtcp_receiver_unittest.cc

Index: media/cast/rtcp/rtcp_receiver_unittest.cc
diff --git a/media/cast/rtcp/rtcp_receiver_unittest.cc b/media/cast/rtcp/rtcp_receiver_unittest.cc
index 5073944fa2832d5dc0e0f7c56130a90af7deeca9..b26bf80e74fa7cc8cb7fcd6fd1c6ec4efbf4fa2f 100644
--- a/media/cast/rtcp/rtcp_receiver_unittest.cc
+++ b/media/cast/rtcp/rtcp_receiver_unittest.cc
@@ -74,9 +74,9 @@ class RtcpReceiverTest : public ::testing::Test {
                                         kSourceSsrc)) {
   }
 
-  ~RtcpReceiverTest() {}
+  virtual ~RtcpReceiverTest() {}
 
-  void SetUp() OVERRIDE {
+  virtual void SetUp() OVERRIDE {
     EXPECT_CALL(mock_receiver_feedback_, OnReceivedSenderReport(_)).Times(0);
     EXPECT_CALL(mock_receiver_feedback_,
                 OnReceiverReferenceTimeReport(_)).Times(0);