Support Telemetry tests on Android Mandoline.

tools/telemetry/telemetry/internal/backends/mandoline/android.py

Index: tools/telemetry/telemetry/internal/backends/mandoline/android.py
diff --git a/mojo/tools/mopy/android.py b/tools/telemetry/telemetry/internal/backends/mandoline/android.py
similarity index 97%
copy from mojo/tools/mopy/android.py
copy to tools/telemetry/telemetry/internal/backends/mandoline/android.py
index 2a886f7c3b604fda88792a45763df69474279739..148bddaeeec4646882d255441100c5d0a5232644 100644
--- a/mojo/tools/mopy/android.py
+++ b/tools/telemetry/telemetry/internal/backends/mandoline/android.py
@@ -2,6 +2,10 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+# TODO(yzshen): Once the dep manager is ready, remove this file and use the one
+# from src/mojo/tools directly.
+
+
 import atexit
 import logging
 import os
@@ -12,9 +16,9 @@ import threading
 import time
 
 from .paths import Paths
+from telemetry.core import util
 
-sys.path.append(os.path.join(os.path.abspath(os.path.dirname(__file__)),
-                             '..', '..', '..', 'build', 'android'))
+util.AddDirToPythonPath(util.GetChromiumSrcDir(), 'build', 'android')
 from pylib import constants
 from pylib.device import device_errors
 from pylib.device import device_utils
@@ -229,7 +233,7 @@ class AndroidShell(object):
 
     # Extract map-origin args and add the extras array with commas escaped.
     parameters = [a for a in arguments if not a.startswith(MAPPING_PREFIX)]
-    parameters = [p.replace(',', '\,') for p in parameters]
+    parameters = [p.replace(',', r'\,') for p in parameters]
     cmd += ['--esa', '%s.extras' % self.target_package, ','.join(parameters)]
 
     atexit.register(self.kill)