Move helper function to webkit

This particular helper function is being removed from NativeCrypto, so
move it here as it's the last user of it.

Change-Id: Iea13ba499487d838068d6156d4d1e6861d05eb36
Merge "Move helper function to webkit"
Fix formatting in clearApplicationUserData exception message.

Before:
  4539 does not have permission:android.permission.CLEAR_APP_USER_DATA to clear datafor process:com.android.chrome
After:
  PID 4539 does not have permission android.permission.CLEAR_APP_USER_DATA to clear data of package com.android.chrome

Change-Id: Ic466decb050e4fa7f3fee4098c4f2abdc6cedf5c
Merge "Fix formatting in clearApplicationUserData exception message."
Merge branch 'master' of https://android.googlesource.com/platform/frameworks/base