Make sure four_byte_interp benches the entire FourByteInterp call.

Relative bench performance still says switch to Fast.

Desktop:
    four_byte_interp_slow_256  11.68
    four_byte_interp_slow_255  12.11
    four_byte_interp_fast_256   7.17
    four_byte_interp_fast_255   8.17

N5:
    four_byte_interp_slow_256  28.49
    four_byte_interp_slow_255  25.08
    four_byte_interp_fast_256  19.40
    four_byte_interp_fast_255  21.69

BUG=
R=reed@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/102053006

git-svn-id: http://skia.googlecode.com/svn/trunk@12512 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed