[android] Clean up test_runner.py arguments.

build/android/pylib/local/device/local_device_environment.py

Index: build/android/pylib/local/device/local_device_environment.py
diff --git a/build/android/pylib/local/device/local_device_environment.py b/build/android/pylib/local/device/local_device_environment.py
index 461223147b09493a0f13e77cabedbb648fc7033c..257d0b4fdcd8f715530450b6f4bf1da7f7135e12 100644
--- a/build/android/pylib/local/device/local_device_environment.py
+++ b/build/android/pylib/local/device/local_device_environment.py
@@ -10,6 +10,7 @@ import shutil
 import tempfile
 import threading
 
+import devil_chromium
 from devil import base_error
 from devil.android import device_blacklist
 from devil.android import device_errors
@@ -94,6 +95,15 @@ class LocalDeviceEnvironment(environment.Environment):
     self._tool_name = args.tool
     self._trace_output = args.trace_output
 
+    devil_chromium.Initialize(
+        output_directory=constants.GetOutDirectory(),
+        adb_path=args.adb_path)
+
+    # Some things such as Forwarder require ADB to be in the environment path.
+    adb_dir = os.path.dirname(constants.GetAdbPath())

[mikecase (-- gone --), 2017/03/14 16:02:44]

You have a TODO to remove existing callers of constants.GetAdbPath(). So you
should probably instead call AdbWrapper.GetAdbPath()

[jbudorick, 2017/03/14 20:00:37]

Good call. Done.

+    if adb_dir and adb_dir not in os.environ['PATH'].split(os.pathsep):
+      os.environ['PATH'] = adb_dir + os.pathsep + os.environ['PATH']
+
   #override
   def SetUp(self):
     if self.trace_output: