Revert of Port most uses of SkOnce to SkLazyPtr. (https://codereview.chromium.org/304383005/)

Reason for revert:
linux x86-64 release segfault in src/ports/SkFontHost_fontconfig.cpp:107

http://108.170.220.120:10117/builders/Test-Ubuntu12-ShuttleA-GTX660-x86_64-Release/builds/905/steps/RunTests/logs/stdio

Original issue's description:
> Port most uses of SkOnce to SkLazyPtr.
>
> BUG=skia:
>
> Committed: http://code.google.com/p/skia/source/detail?r=15006
>
> Committed: http://code.google.com/p/skia/source/detail?r=15014

R=reed@google.com, mtklein@chromium.org
TBR=mtklein@chromium.org, reed@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/306063004

git-svn-id: http://skia.googlecode.com/svn/trunk@15015 2bbb7eff-a529-9590-31e7-b0007b416f81
remove SK_SUPPORT_LEGACY_BLURMASKFILTER_STYLE

R=scroggo@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/308953002

git-svn-id: http://skia.googlecode.com/svn/trunk@15016 2bbb7eff-a529-9590-31e7-b0007b416f81