tree 3c214bd5585a9de698aafa0e65fe18ae0f07df68
parent 7103cca7e2bc6de0fbd765d633436cf66b316ee9
author Ben Wagner <bungeman@google.com> 1543946720 -0500
committer Ben Wagner <bungeman@google.com> 1543952298 +0000

Make callable traits work with msvc.

The msvc preprocessor interprets empty parentheses as zero parameters
instead of as a single empty parameter. Work around this by making all
marcos which may take a single empty parameter also take a second
ignored parameter.

Change-Id: Iea8bd386b7ffe3c14eb048d81e18c42c8d2894d9
Reviewed-on: https://skia-review.googlesource.com/c/174306
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>