am 892771ab: Rename WRITE_SDCARD to WRITE_EXTERNAL_STORAGE in browser test app

Merge commit '892771ab81f79a6b0cf9735701760c5a12d6ab85'

* commit '892771ab81f79a6b0cf9735701760c5a12d6ab85':
  Rename WRITE_SDCARD to WRITE_EXTERNAL_STORAGE in browser test app