Add default resourcePath to SampleApp on Android.

Currently SampleApp on Android cannot find resources. This sets the
resourcePath to /data/local/tmp/skia/resources/ which is the path
used in documentationo. A future change will allow this default to be
overridden.

BUG=skia:3815

Review URL: https://codereview.chromium.org/1125363004
1 file changed