Revert of Move base_dir to user_story_set, remove file_path.

tools/telemetry/telemetry/page/page_unittest.py

Index: tools/telemetry/telemetry/page/page_unittest.py
diff --git a/tools/telemetry/telemetry/page/page_unittest.py b/tools/telemetry/telemetry/page/page_unittest.py
index 58b95a5ee41b4344d8bacb39372245d788a1710f..4a855089a29351f8b9f11317062c3ea38cf092f2 100644
--- a/tools/telemetry/telemetry/page/page_unittest.py
+++ b/tools/telemetry/telemetry/page/page_unittest.py
@@ -2,7 +2,6 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import inspect
 import os
 import unittest
 
@@ -53,11 +52,9 @@
                       pages)
 
   def testGetUrlBaseDirAndFileForUrlBaseDir(self):
-    base_dir = os.path.dirname(__file__)
-    file_path = os.path.dirname(base_dir) + '/otherdir/file.html'
-    ps = page_set.PageSet(file_path=base_dir, serving_dirs=['../somedir/'])
+    ps = page_set.PageSet(file_path='basedir/', serving_dirs=['../somedir/'])
     ps.AddUserStory(page.Page('file://../otherdir/file.html', ps, ps.base_dir))
-    self.assertPathEqual(ps[0].file_path, file_path)
+    self.assertPathEqual(ps[0].file_path, 'otherdir/file.html')
 
   def testDisplayUrlForHttp(self):
     ps = page_set.PageSet(file_path=os.path.dirname(__file__))