Revert "Introduce SkArenaAlloc - should be fast for POD types and RAII for types with dtors."

This reverts commit 6ff51aedda6f3b4873c292d7e03e47ad656543f8.

Reason for revert: breaks win2k8 and PDFium

Change-Id: Ib1e2db8e523d5d321836ce00e3773def3db8be2f
Reviewed-on: https://skia-review.googlesource.com/6898
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
8 files changed