GitLab

With the recent saturation fixes, these are now simple enough to
inline without increasing binary size significantly.  Doing this
allows using them in constexpr contexts, of which there are a few (at
least for InMinutes()).

On my 64-bit Windows "official" non-branded release build, chrome.dll
had the following sizes:

Before saturation fixes: 147661312 bytes
After saturation fixes:  147660800 bytes
After this constexpr CL: 147663872 bytes

Bug: none
Change-Id: I786ed3f36e0952bd766d3826f0eca34fe676af30
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2281730
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Satoru Takabayashi <satorux@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#785640}