[telemetry] Cleanups for benchmarks importing page sets.

content/test/gpu/page_sets/page_set_unittest.py

Index: content/test/gpu/page_sets/page_set_unittest.py
diff --git a/content/test/gpu/page_sets/page_set_unittest.py b/content/test/gpu/page_sets/page_set_unittest.py
index f55e95d09c7c76e97fd19b8a4ed8976d119c6c00..b3203f76603141e68d0552f2c334e49d6f0c1532 100644
--- a/content/test/gpu/page_sets/page_set_unittest.py
+++ b/content/test/gpu/page_sets/page_set_unittest.py
@@ -4,13 +4,12 @@
 
 import os
 
-from telemetry.core import discover
-from telemetry.page import page_set as page_set_module
-from telemetry.page import page_set_archive_info
 from telemetry.unittest import page_set_smoke_test
 
 
 class PageSetUnitTest(page_set_smoke_test.PageSetSmokeTest):
 
   def testSmoke(self):
-    self.RunSmokeTest(os.path.dirname(__file__))
+    page_sets_dir = os.path.dirname(os.path.realpath(__file__))
+    top_level_dir = os.path.dirname(page_sets_dir)
+    self.RunSmokeTest(page_sets_dir, top_level_dir)