Revert "Make leak counters thread-safe and turn them on by default for Debug"

iThis CL is breaking the Android debug test bots by firing an assert.

BUG=skia:1219

Review URL: https://codereview.chromium.org/138683006

git-svn-id: http://skia.googlecode.com/svn/trunk@13076 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed