base: Ensure that (UN)LIKELY macros use builtin on clang.

Currently, the LIKELY macros are guarded by COMPILER_GCC, which works
with clang except on windows. This patch ensures that all clang platforms
hit this.

[email protected], [email protected]

Change-Id: I1850b0d91dd552b468c9c84a4c072571dd811cb2
Reviewed-on: https://chromium-review.googlesource.com/658328
Reviewed-by: Daniel Cheng <[email protected]>
Commit-Queue: Vladimir Levin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#500750}
1 file changed