Update WebView manifest to target/minSDK 21.

Bug: 16902981
Change-Id: I44594b62e94b034662b30f9e43a65946224c3152
1 file changed
tree: f4f6ea850eeb134626cc6888f835568e1fc18dc2
  1. Android.mk
  2. chromium/
  3. nullwebview/