[Android] Handle null values in BuildInfo.

In some emulator environments, BuildInfo constants can be null.

BUG=601081

Review URL: https://codereview.chromium.org/1866023002

Cr-Commit-Position: refs/heads/master@{#385509}


CrOS-Libchrome-Original-Commit: 442dab7d080bd180f1aa70da966c78eedd7e4c88
1 file changed
tree: c4d5506810adaaf02e6ca551918a1a3026045dbf
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/