Revert of Add SkRacy

tools/tsan.supp

Index: tools/tsan.supp
diff --git a/tools/tsan.supp b/tools/tsan.supp
index f6870140404190d5e45ae188a3a4b03e9331f92e..6c2b0909fc0abdc221c6dad153f8e3abf338595d 100644
--- a/tools/tsan.supp
+++ b/tools/tsan.supp
@@ -25,3 +25,21 @@
 race:RefFCI
 race:SkString
 race:SkPDF
+
+# These race benignly as used by DMQuiltTask: skia:2725.
+# Suppress while I look for a more focused way to silence this.
+race:SkPixelRef::callGenIDChangeListeners
+race:SkPixelRef::needsNewGenID
+
+# SkPathRef caches its bounding box the first time it's needed.
+# This will be fixed naturally once we create (from a single thread) a
+# bounding-box hierarchy for SkRecord-based SkPictures; all bounds will come pre-cached.
+# So just shut this up for now.
+race:SkPathRef::computeBounds
+
+# SkMatrix caches a type mask.  If we race on this, we'll just calculate the same thing a few times.
+race:SkMatrix::getType
+race:SkMatrix::rectStaysRect
+race:SkMatrix::getPerspectiveTypeMaskOnly
+
+# TODO: some sort of SkRacy<T> to handle cases like SkMatrix, SkPathRef, SkPixelRef above?