Remove uses of unnamed namespace in bench/ directory.

Skia prefers to use static over unnamed namespace.

BUG=None
TEST=None, no functional changes.
R=bsalomon@google.com, robertphillips@google.com

Author: tfarina@chromium.org

Review URL: https://chromiumcodereview.appspot.com/24660003

git-svn-id: http://skia.googlecode.com/svn/trunk@11483 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed