Update tools/perf to use cloud_storage from catapult.

tools/perf/core/path_util.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
+import sys
 
 
 def GetChromiumSrcDir():
   return os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(
         os.path.abspath(__file__)))))
 
+
+def GetCatapultBaseDir():
+  return os.path.join(
+      GetChromiumSrcDir(), 'third_party', 'catapult', 'catapult_base')
+
+
 def GetTelemetryDir():
   return os.path.join(GetChromiumSrcDir(), 'tools', 'telemetry')
 
+
 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')
 
+
+def AddTelemetryToPath():
+  telemetry_path = GetTelemetryDir()
+  if telemetry_path not in sys.path:
+    sys.path.insert(1, telemetry_path)
+
+
+def AddCatapultBaseToPath():
+  catapult_base_path = GetCatapultBaseDir()
+  if catapult_base_path not in sys.path:
+    sys.path.insert(1, catapult_base_path)

[eakuefner, 2016/01/08 19:54:54]

If you do client_config in this CL, you can add here:

def GetPerfClientConfigPath():
  return os.path.join(GetPerfDir(), 'core', 'binary_dependencies.json')

[aiolos (Not reviewing), 2016/01/08 20:25:27]

Do we actually need that? That path gets passed in by default to ClientConfig. I
think we prefer people using that class instead of them manually setting the
config file.

[eakuefner, 2016/01/08 20:31:22]

Oh, I see. I didn't realize that ChromiumConfig works the way it does. I think
it's fine as you have it now.