gradle_project_test.py: Fix calculation of checkout root dir.

BUG=chromium:611808
NOTRY=True
NOTREECHECKS=True

Change-Id: I9493a7e171dbd8198eaa4c4723690fafc851e144
Reviewed-on: https://webrtc-review.googlesource.com/1568
Commit-Queue: Henrik Kjellander <kjellander@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19848}
diff --git a/examples/androidtests/gradle_project_test.py b/examples/androidtests/gradle_project_test.py
index 0f11752..cd8fcd8 100644
--- a/examples/androidtests/gradle_project_test.py
+++ b/examples/androidtests/gradle_project_test.py
@@ -25,8 +25,7 @@
 
 
 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))
 GENERATE_GRADLE_SCRIPT = os.path.join(SRC_DIR,
                                       'build/android/gradle/generate_gradle.py')
 GRADLEW_BIN = os.path.join(SCRIPT_DIR, 'third_party/gradle/gradlew')