[Android] Add a configurable environment for devil/. (RELAND 2)

build/android/incremental_install/installer.py

Index: build/android/incremental_install/installer.py
diff --git a/build/android/incremental_install/installer.py b/build/android/incremental_install/installer.py
index e418cdb0e695ed4a997dbcd9afba091c98d0cc47..e96ca926bdea5a215b63064eb83e09a55d3adb39 100755
--- a/build/android/incremental_install/installer.py
+++ b/build/android/incremental_install/installer.py
@@ -13,7 +13,9 @@ import os
 import posixpath
 import sys
 
-sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
+sys.path.append(
+    os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir)))
+import devil_chromium
 from devil.android import apk_helper
 from devil.android import device_utils
 from devil.android import device_errors
@@ -250,6 +252,8 @@ def main():
   if args.output_directory:
     constants.SetOutputDirectory(args.output_directory)
 
+  devil_chromium.Initialize(output_directory=constants.GetOutputDirectory())
+
   if args.device:
     # Retries are annoying when commands fail for legitimate reasons. Might want
     # to enable them if this is ever used on bots though.