Be able to build cast_unittest and related targets in Chrome tree

media/cast/video_receiver/video_decoder_unittest.cc

Index: media/cast/video_receiver/video_decoder_unittest.cc
diff --git a/media/cast/video_receiver/video_decoder_unittest.cc b/media/cast/video_receiver/video_decoder_unittest.cc
index 0b95d128b751b9df1c5c670927126862e14e5d68..5b6ae0ceaa306fef2b4444cff8885cd6d2326d23 100644
--- a/media/cast/video_receiver/video_decoder_unittest.cc
+++ b/media/cast/video_receiver/video_decoder_unittest.cc
@@ -36,7 +36,13 @@ class TestVideoDecoderCallback :
   }
 
   int number_times_called() {return num_called_;}
+
+ protected:
+  virtual ~TestVideoDecoderCallback() {}
+
  private:
+  friend class base::RefCountedThreadSafe<TestVideoDecoderCallback>;
+
   int num_called_;
 };
 
@@ -49,7 +55,7 @@ class VideoDecoderTest : public ::testing::Test {
     video_decoder_callback_ = new TestVideoDecoderCallback();
   }
 
-  ~VideoDecoderTest() {}
+  virtual ~VideoDecoderTest() {}
   virtual void SetUp() {
     task_runner_ = new test::FakeTaskRunner(&testing_clock_);
     cast_thread_ = new CastThread(task_runner_, task_runner_, task_runner_,