Refactoring: Hide VideoCodec.codecSpecific as "private"

webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc

Index: webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
diff --git a/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc b/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
index d562dd4bb97e21f80726f3b3e54e55735982662c..972c19078f8a7fae6fba65bc62bdae3a0a201c0c 100644
--- a/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
+++ b/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
@@ -151,7 +151,7 @@ class TestVp8Impl : public ::testing::Test {
     codec_inst_.startBitrate = 300;
     codec_inst_.maxBitrate = 4000;
     codec_inst_.qpMax = 56;
-    codec_inst_.codecSpecific.VP8.denoisingOn = true;
+    codec_inst_.VP8()->denoisingOn = true;
 
     EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
               encoder_->InitEncode(&codec_inst_, 1, 1440));
@@ -205,8 +205,8 @@ TEST_F(TestVp8Impl, EncoderParameterTest) {
   codec_inst_.maxFramerate = 30;
   codec_inst_.startBitrate = 300;
   codec_inst_.qpMax = 56;
-  codec_inst_.codecSpecific.VP8.complexity = kComplexityNormal;
-  codec_inst_.codecSpecific.VP8.numberOfTemporalLayers = 1;
+  codec_inst_.VP8()->complexity = kComplexityNormal;
+  codec_inst_.VP8()->numberOfTemporalLayers = 1;
   // Calls before InitEncode().
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK, encoder_->Release());
   int bit_rate = 300;