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/utils/SkShadowTessellator.cpp b/src/utils/SkShadowTessellator.cpp
index 943567f..9fdc51d 100644
--- a/src/utils/SkShadowTessellator.cpp
+++ b/src/utils/SkShadowTessellator.cpp
@@ -913,7 +913,7 @@
     // umbraColor is the interior value, penumbraColor the exterior value.
     auto outset = SkDrawShadowMetrics::AmbientBlurRadius(baseZ);
     auto inset = outset * SkDrawShadowMetrics::AmbientRecipAlpha(baseZ) - outset;
-    inset = SkTPin(inset, 0.0f, SkTMin(path.getBounds().width(),
+    inset = SkTPin(inset, 0.0f, std::min(path.getBounds().width(),
                                        path.getBounds().height()));
 
     if (!this->computePathPolygon(path, ctm)) {