Include the SkTSort header only where it is used.

Change-Id: If51be35205b40c4a22979a4b49b031126af1dde7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/302500
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/src/pathops/SkOpEdgeBuilder.cpp b/src/pathops/SkOpEdgeBuilder.cpp
index 757fa31..6e24c69 100644
--- a/src/pathops/SkOpEdgeBuilder.cpp
+++ b/src/pathops/SkOpEdgeBuilder.cpp
@@ -6,6 +6,7 @@
  */
 #include "src/core/SkGeometry.h"
 #include "src/core/SkPathPriv.h"
+#include "src/core/SkTSort.h"
 #include "src/pathops/SkOpEdgeBuilder.h"
 #include "src/pathops/SkReduceOrder.h"