make most of SkColorPriv.h private

created new file src/core/SkColorData.h for
internal consumption. Note that many of the
functions there are unused as well.

Bug: skia: 6898
R: reed@google.com
Change-Id: I25bfd5a9c21f53558c4ca65a77eb5d322d897c6d
Reviewed-on: https://skia-review.googlesource.com/46848
Commit-Queue: Cary Clark <caryclark@google.com>
Reviewed-by: Mike Reed <reed@google.com>
diff --git a/tests/ColorPrivTest.cpp b/tests/ColorPrivTest.cpp
index 02885d0..d2045e8 100644
--- a/tests/ColorPrivTest.cpp
+++ b/tests/ColorPrivTest.cpp
@@ -1,6 +1,13 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
 #include "Test.h"
 
-#include "SkColorPriv.h"
+#include "SkColorData.h"
 
 #define ASSERT(expr) REPORTER_ASSERT(r, expr)