Make android jinja wrapper work on utf-8 templates

Jinja2 defaults to utf-8 for templates... unless the template is loaded
using env.from_string. Since we process manifest xml files which are
declared utf-8, the wrapper should treat them as utf-8 properly.

BUG=

Review URL: https://codereview.chromium.org/816813003

Cr-Commit-Position: refs/heads/master@{#312352}
1 file changed