The register keyword is deprecated in C++, even at -O0, registers are used automatically.

The register keyword is deprecated in C++, even at -O0, registers are used automatically.

Having the register keyword there causes a warning about deprecated keywords when using clang (and possibly future gcc versions), and isn't needed.

Patch originally submitted to AOSP
https://android-review.googlesource.com/#/c/72501

R=mtklein@google.com, scroggo@google.com, reed@google.com

Author: djsollen@google.com

Review URL: https://codereview.chromium.org/93703005

git-svn-id: http://skia.googlecode.com/svn/trunk@12702 2bbb7eff-a529-9590-31e7-b0007b416f81