Step #2: Add batch mode to VideoProcessor integration tests.

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

Index: webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
diff --git a/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc b/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
index 1849326e52c1d341e4c292f78e94d346eb049faa..a88f75e36805e2b792609aff0993634d59ac4867 100644
--- a/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
+++ b/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
@@ -280,6 +280,31 @@ TEST_F(VideoProcessorIntegrationTest, Process10PercentPacketLoss) {
                          rc_thresholds, nullptr /* visualization_params */);
 }
 
+// This test is identical to VideoProcessorIntegrationTest.ProcessZeroPacketLoss
+// except that |batch_mode| is turned on. The main point of this test is to see
+// that the reported stats are not wildly varying between batch mode and the
+// regular online mode.
+TEST_F(VideoProcessorIntegrationTest, ProcessInBatchMode) {
+  // Bit rate and frame rate profile.
+  RateProfile rate_profile;
+  SetRateProfile(&rate_profile, 0, 500, 30, 0);
+  rate_profile.frame_index_rate_update[1] = kNumFramesShort + 1;
+  rate_profile.num_frames = kNumFramesShort;
+  // Codec/network settings.
+  CodecParams process_settings;
+  SetCodecParams(&process_settings, kVideoCodecVP8, kHwCodec, kUseSingleCore,
+                 0.0f, -1, 1, false, true, true, false, 352, 288, "foreman_cif",
+                 false /* verbose_logging */, true /* batch_mode */);
+  // Thresholds for expected quality.
+  QualityThresholds quality_thresholds;
+  SetQualityThresholds(&quality_thresholds, 34.95, 33.0, 0.90, 0.89);
+  // Thresholds for rate control.
+  RateControlThresholds rc_thresholds[1];
+  SetRateControlThresholds(rc_thresholds, 0, 0, 40, 20, 10, 15, 0, 1);
+  ProcessFramesAndVerify(quality_thresholds, rate_profile, process_settings,
+                         rc_thresholds, nullptr /* visualization_params */);
+}
+
 #endif  // !defined(WEBRTC_IOS)
 
 // The tests below are currently disabled for Android. For ARM, the encoder