Change cross color to white instead of transparent

Otherwise, the transparent cross was a bit ugly when opening the storage
or data settings (a.g. Settings > Apps > Emergency information > Storage)
Bug:27533454
Change-Id: I878fab445f5f003975081652f887a20281b44483
5 files changed
tree: f88d0325878602e0a52d10f627c83acf2f2c5d69
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml