Add option to specify ADB binary in test runner.

build/android/pylib/android_commands.py

Index: build/android/pylib/android_commands.py
diff --git a/build/android/pylib/android_commands.py b/build/android/pylib/android_commands.py
index ea86e6d90176beddca6f2f5c7217635793a09f72..1a437823ddcfc051e6e3c5b73142423068159953 100644
--- a/build/android/pylib/android_commands.py
+++ b/build/android/pylib/android_commands.py
@@ -314,11 +314,8 @@ class AndroidCommands(object):
       device: If given, adb commands are only send to the device of this ID.
           Otherwise commands are sent to all attached devices.
     """
-    adb_dir = os.path.dirname(constants.GetAdbPath())
-    if adb_dir and adb_dir not in os.environ['PATH'].split(os.pathsep):
-      # Required by third_party/android_testrunner to call directly 'adb'.
-      os.environ['PATH'] += os.pathsep + adb_dir
     self._adb = adb_interface.AdbInterface()
+    self._adb.SetAdbPath(constants.GetAdbPath())

[jbudorick, 2014/11/11 18:04:03]

Add the adb path as a parameter to AdbInterface.__init__ instead.

[mikecase (-- gone --), 2014/11/11 19:36:01]

Done.

     if device:
       self._adb.SetTargetSerial(device)
     self._device = device