Lay groundwork for SkOpts.
This doesn't really do anything yet. It's just the CPU detection code, skeleton new .cpp files, and a few little .gyp tweaks.
BUG=skia:4117
Committed: https://skia.googlesource.com/skia/+/ce2c5055cee5d5d3c9fc84c1b3eeed4b4d84a827
Review URL: https://codereview.chromium.org/1255193002
diff --git a/src/core/SkOpts.h b/src/core/SkOpts.h
new file mode 100644
index 0000000..71abae5
--- /dev/null
+++ b/src/core/SkOpts.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkOpts_DEFINED
+#define SkOpts_DEFINED
+
+#include "SkTypes.h"
+
+namespace SkOpts {
+ // Call to replace pointers to portable functions with pointers to CPU-specific functions.
+ // Thread-safe and idempotent.
+ // Called by SkGraphics::Init(), and automatically #if SK_ALLOW_STATIC_GLOBAL_INITIALIZERS.
+ void Init();
+
+ // (Function pointers go here).
+}
+
+#endif//SkOpts_DEFINED