Move SkTLazy.h to src/

It is no longer used in public or private includes or by any users.

Change-Id: Id3803531b411dc7a565b2bb688505eb2c1212cfd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/208661
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/gn/core.gni b/gn/core.gni
index f80f511..2e10aec 100644
--- a/gn/core.gni
+++ b/gn/core.gni
@@ -86,7 +86,6 @@
   "$_include/core/SkSurfaceCharacterization.h",
   "$_include/core/SkSurfaceProps.h",
   "$_include/core/SkSwizzle.h",
-  "$_include/core/SkTLazy.h",
   "$_include/core/SkTextBlob.h",
   "$_include/core/SkTime.h",
   "$_include/core/SkTraceMemoryDump.h",
@@ -371,6 +370,7 @@
   "$_src/core/SkTime.cpp",
 
   "$_src/core/SkThreadID.cpp",
+  "$_src/core/SkTLazy.h",
   "$_src/core/SkTLList.h",
   "$_src/core/SkTLS.cpp",
   "$_src/core/SkTMultiMap.h",
diff --git a/include/utils/SkPaintFilterCanvas.h b/include/utils/SkPaintFilterCanvas.h
index d734af0..97e5e37 100644
--- a/include/utils/SkPaintFilterCanvas.h
+++ b/include/utils/SkPaintFilterCanvas.h
@@ -10,7 +10,6 @@
 
 #include "SkCanvasVirtualEnforcer.h"
 #include "SkNWayCanvas.h"
-#include "SkTLazy.h"
 
 class SkAndroidFrameworkUtils;
 
diff --git a/include/core/SkTLazy.h b/src/core/SkTLazy.h
similarity index 100%
rename from include/core/SkTLazy.h
rename to src/core/SkTLazy.h