Use new common utils where possible.

slave/skia_slave_scripts/utils/file_utils_test.py

Index: slave/skia_slave_scripts/utils/file_utils_test.py
diff --git a/slave/skia_slave_scripts/utils/file_utils_test.py b/slave/skia_slave_scripts/utils/file_utils_test.py
index b8b4d6bd4ee96b7f2e9ceaecc6b8b35bddf003b0..8afa8efe12a2f5044ea37fde81bdbf3ed4242b11 100644
--- a/slave/skia_slave_scripts/utils/file_utils_test.py
+++ b/slave/skia_slave_scripts/utils/file_utils_test.py
@@ -9,10 +9,13 @@ import os
 import sys
 import unittest
 
-import misc
+BUILDBOT_PATH = os.path.realpath(os.path.join(
+    os.path.dirname(os.path.abspath(__file__)), os.pardir, os.pardir, os.pardir)
+)
+
 # Appending to PYTHONPATH to find common.
-sys.path.append(os.path.join(misc.BUILDBOT_PATH, 'third_party',
-                             'chromium_buildbot', 'scripts'))
+sys.path.append(os.path.join(BUILDBOT_PATH, 'third_party', 'chromium_buildbot',
+                             'scripts'))
 import file_utils
 
 from common import chromium_utils