[tools/perf] Remove default values of benchmark_dirs and top_level_dir in chromium_config module

tools/perf/core/path_util.py

Index: tools/perf/core/path_util.py
diff --git a/tools/perf/core/path_util.py b/tools/perf/core/path_util.py
index 27ea09c157806aa7a8e9c97c8a9c8812759c0ee9..dcfcd082b256222ccf3b92e936827c44e6d6fcda 100644
--- a/tools/perf/core/path_util.py
+++ b/tools/perf/core/path_util.py
@@ -5,18 +5,15 @@
 import os
 import sys
 
-sys.path.insert(1, os.path.join(os.path.abspath(__file__), '..', '..'))
-
-from chrome_telemetry_build import chromium_config
-
 
 def GetChromiumSrcDir():
-  return chromium_config.GetChromiumSrcDir()
-
+  return os.path.abspath(os.path.join(
+      os.path.dirname(__file__), '..', '..', '..'))
 
 
 def GetTelemetryDir():
-  return chromium_config.GetTelemetryDir()
+  return os.path.join(
+      GetChromiumSrcDir(), 'third_party', 'catapult', 'telemetry')
 
 
 def GetPerfDir():