[Android] Prepare build/android/ for catapult+devil.

build/android/gyp/jinja_template.py

Index: build/android/gyp/jinja_template.py
diff --git a/build/android/gyp/jinja_template.py b/build/android/gyp/jinja_template.py
index a3633ae880d10ddfab8ba51ed76fcb714a44055d..7e9624be7c2f60aa4e83795c5ed237bae9c0f33f 100755
--- a/build/android/gyp/jinja_template.py
+++ b/build/android/gyp/jinja_template.py
@@ -11,12 +11,13 @@ import optparse
 import os
 import sys
 
-sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
-from pylib import constants
 from util import build_utils
 
+sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
+from pylib.constants import host_paths
+
 # Import jinja2 from third_party/jinja2
-sys.path.append(os.path.join(constants.DIR_SOURCE_ROOT, 'third_party'))
+sys.path.append(os.path.join(host_paths.DIR_SOURCE_ROOT, 'third_party'))
 import jinja2  # pylint: disable=F0401
 
 
@@ -79,7 +80,7 @@ def main():
   parser.add_option('--loader-base-dir', help='Base path used by the template '
                     'loader. Must be a common ancestor directory of '
                     'the inputs. Defaults to DIR_SOURCE_ROOT.',
-                    default=constants.DIR_SOURCE_ROOT)
+                    default=host_paths.DIR_SOURCE_ROOT)
   parser.add_option('--variables', help='Variables to be made available in the '
                     'template processing environment, as a GYP list (e.g. '
                     '--variables "channel=beta mstone=39")', default='')