[Android] Add a configurable environment for devil/. (RELAND)

build/android/test_runner.py

Index: build/android/test_runner.py
diff --git a/build/android/test_runner.py b/build/android/test_runner.py
index a3a3a98aca283509202c1446145d9838a6ee1820..6d53045e8760e998a3accd0c795cd6d22d0daca5 100755
--- a/build/android/test_runner.py
+++ b/build/android/test_runner.py
@@ -16,6 +16,8 @@ import sys
 import threading
 import unittest
 
+import devil_chromium
+
 from devil import base_error
 from devil.android import apk_helper
 from devil.android import device_blacklist
@@ -49,6 +51,10 @@ from pylib.uiautomator import setup as uiautomator_setup
 from pylib.uiautomator import test_options as uiautomator_test_options
 
 
+_DEVIL_STATIC_CONFIG_FILE = os.path.abspath(os.path.join(
+    constants.DIR_SOURCE_ROOT, 'build', 'android', 'devil_config.json'))
+
+
 def AddCommonOptions(parser):
   """Adds all common options to |parser|."""
 
@@ -113,6 +119,9 @@ def ProcessCommonOptions(args):
     constants.SetOutputDirectory(args.output_directory)
   if args.adb_path:
     constants.SetAdbPath(args.adb_path)
+
+  devil_chromium.Initialize()
+
   # Some things such as Forwarder require ADB to be in the environment path.
   adb_dir = os.path.dirname(constants.GetAdbPath())
   if adb_dir and adb_dir not in os.environ['PATH'].split(os.pathsep):