Add unit tests for qp parser.

webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.h

Index: webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.h
diff --git a/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.h b/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.h
index 2481252c7b275e16f2a53ad588c867ab615defde..1ad6419aff8d94de0995b2693f4ab8485827a874 100644
--- a/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.h
+++ b/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.h
@@ -606,6 +606,12 @@ class VideoProcessorIntegrationTest : public testing::Test {
       while (frame_number < num_frames) {
         EXPECT_TRUE(processor_->ProcessFrame(frame_number));
 
+#if !defined(WEBRTC_VIDEOPROCESSOR_H264_TESTS)

[brandtr, 2017/05/26 07:18:46]

This will disable the EXPECT whenever H264 is compiled. Better to check
|codec_type| instead.

[jianj, 2017/05/26 18:20:27]

Done.

+        if (!process.hw_codec)

[brandtr, 2017/05/26 07:18:46]

{}

[jianj, 2017/05/26 18:20:27]

Done.

+          EXPECT_EQ(processor_->GetQpFromEncoder(),
+                    processor_->GetQpFromBitstream());
+#endif
+
         ++num_frames_per_update_[TemporalLayerIndexForFrame(frame_number)];
         ++num_frames_total_;
         UpdateRateControlMetrics(frame_number);