Remove SkTMin and SkTMax

Use std::min and std::max everywhere.

SkTPin still exists. We can't use std::clamp yet, and even when
we can, it has undefined behavior with NaN. SkTPin is written
to ensure that we return a value in the [lo, hi] range.

Change-Id: I506852a36e024ae405358d5078a872e2c77fa71e
Docs-Preview: https://skia.org/?cl=269357
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269357
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/src/pathops/SkDConicLineIntersection.cpp b/src/pathops/SkDConicLineIntersection.cpp
index 6a9eb4b..6c87f04 100644
--- a/src/pathops/SkDConicLineIntersection.cpp
+++ b/src/pathops/SkDConicLineIntersection.cpp
@@ -60,7 +60,7 @@
 
 #ifdef SK_DEBUG
     static bool close_to(double a, double b, const double c[3]) {
-        double max = SkTMax(-SkTMin(SkTMin(c[0], c[1]), c[2]), SkTMax(SkTMax(c[0], c[1]), c[2]));
+        double max = std::max(-std::min(std::min(c[0], c[1]), c[2]), std::max(std::max(c[0], c[1]), c[2]));
         return approximately_zero_when_compared_to(a - b, max);
     }
 #endif