move SkTRegister.h into tools

BUG=skia:

Change-Id: Ie7d4fac3024b361a281f456fec2b3a837e2bfe43
Reviewed-on: https://skia-review.googlesource.com/6881
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
diff --git a/gm/gm.h b/gm/gm.h
index 0b26c16..2e4b602 100644
--- a/gm/gm.h
+++ b/gm/gm.h
@@ -13,7 +13,7 @@
 #include "SkPaint.h"
 #include "SkSize.h"
 #include "SkString.h"
-#include "SkTRegistry.h"
+#include "../tools/Registry.h"
 #include "sk_tool_utils.h"
 #include "SkClipOpPriv.h"
 
@@ -130,7 +130,7 @@
         SkMatrix fStarterMatrix;
     };
 
-    typedef SkTRegistry<GM*(*)(void*)> GMRegistry;
+    typedef sk_tools::Registry<GM*(*)(void*)> GMRegistry;
 
     class SimpleGM : public skiagm::GM {
     public: