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/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index 17bf974..b7a73c2 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -537,7 +537,7 @@
 {
     inc_canvas();
     this->init(sk_make_sp<SkNoPixelsDevice>(
-            SkIRect::MakeWH(SkTMax(width, 0), SkTMax(height, 0)), fProps));
+            SkIRect::MakeWH(std::max(width, 0), std::max(height, 0)), fProps));
 }
 
 SkCanvas::SkCanvas(const SkIRect& bounds)