Revert 257524 "Move IsStringASCII/UTF8 to base namespace."

> Move IsStringASCII/UTF8 to base namespace.
> 
> Use StringPiece for IsStringUTF8.
> 
> TBR=sky
> 
> Review URL: https://codereview.chromium.org/196793010

TBR=brettw@chromium.org

Review URL: https://codereview.chromium.org/198163004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257533 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: bd6fc2fb1af851ac7e2f4a3e08ad3a92ab6ba4af
5 files changed
tree: 98fc24fa6ec2d9e781a2b5a4f1de96fe0da5f578
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. ipc/
  6. mojo/
  7. testing/
  8. third_party/
  9. ui/