Fix BasicRateTargetingVBRLagRealtime after 2fed9c

The unit test "BasicRateTargetingVBRLagRealtime()" fails after commit
2fed9c. With CONFIG_REALTIME_ONLY=1, lag_in_frames is set to 0, and
along with other factors in that configuration the threshold in that
specific unit test needs to be lowered.

Change-Id: I2170bef666bcb1fcc4a9a3e68f9a617bf71daeb5

test/datarate_test.cc

diff --git a/test/datarate_test.cc b/test/datarate_test.cc
index c777d4a..d886c2a 100644
--- a/test/datarate_test.cc
+++ b/test/datarate_test.cc
@@ -373,8 +373,16 @@
     ResetModel();
     lag_realtime_mode_ = 1;
     ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
+#if CONFIG_REALTIME_ONLY
+    // With CONFIG_REALTIME_ONLY=1, lag_in_frames is set to 0, and along with
+    // other factors in that configuration the threshold needs to be lowered
+    // after commit 2fed9c389d.
+    ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.65)
+        << " The datarate for the file is lower than target by too much!";
+#else
     ASSERT_GE(effective_datarate_, cfg_.rc_target_bitrate * 0.85)
         << " The datarate for the file is lower than target by too much!";
+#endif
     ASSERT_LE(effective_datarate_, cfg_.rc_target_bitrate * 2.0)
         << " The datarate for the file is greater than target by too much!";
   }