video_quality_loopback_test.py: Fix relative path to root.

This was missed in https://webrtc-review.googlesource.com/1575

BUG=chromium:611808
NOTRY=True
TBR=mbonadei@webrtc.org

Change-Id: Ie5b891d8071a70a510f114d8d0ab2dd6a8547b3c
Reviewed-on: https://webrtc-review.googlesource.com/1840
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Commit-Queue: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19877}
diff --git a/examples/androidtests/video_quality_loopback_test.py b/examples/androidtests/video_quality_loopback_test.py
index 751de93..0b55878 100755
--- a/examples/androidtests/video_quality_loopback_test.py
+++ b/examples/androidtests/video_quality_loopback_test.py
@@ -30,8 +30,7 @@
 
 
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
-SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir,
-                                        os.pardir))
+SRC_DIR = os.path.normpath(os.path.join(SCRIPT_DIR, os.pardir, os.pardir))
 BAD_DEVICES_JSON = os.path.join(SRC_DIR,
                                 os.environ.get('CHROMIUM_OUT_DIR', 'out'),
                                 'bad_devices.json')