[Telemetry] Update telemetry_unittests to use tools/perf/run_telemetry_tests

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 b3aee1e77a91ba0f7b06c5d6348616498d0606a2..77ea275fd1a67149ee806a5cbf7835816084cabd 100644
--- a/tools/perf/core/path_util.py
+++ b/tools/perf/core/path_util.py
@@ -3,21 +3,28 @@
 # found in the LICENSE file.
 
 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 os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(
-        os.path.abspath(__file__)))))
+  return chromium_config.GetChromiumSrcDir()
+
 
 def GetTelemetryDir():
-  return os.path.join(GetChromiumSrcDir(), 'tools', 'telemetry')
+  return chromium_config.GetTelemetryDir()
+
 
 def GetPerfDir():
   return os.path.join(GetChromiumSrcDir(), 'tools', 'perf')
 
+
 def GetPerfStorySetsDir():
   return os.path.join(GetPerfDir(), 'page_sets')
 
+
 def GetPerfBenchmarksDir():
   return os.path.join(GetPerfDir(), 'benchmarks')
-