Merge "Clear calling identity when enabling WebView fallback logic." into nyc-dev
am: 95cd5d5

* commit '95cd5d58a8d34b926ed2c89d7547974fa1a19223':
  Clear calling identity when enabling WebView fallback logic.

Change-Id: I8d717fd9ad467f4ee8d7e204d9c1e3e84ff5af27