Lay groundwork for SkOpts.

include/core/SkGraphics.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGraphics_DEFINED
 #define SkGraphics_DEFINED
 
 #include "SkTypes.h"
 
 class SkData;
 class SkImageGenerator;
 
 class SK_API SkGraphics {
 public:
     /**
      *  Call this at process initialization time if your environment does not
-     *  permit static global initializers that execute code. Note that
-     *  Init() is not thread-safe.
+     *  permit static global initializers that execute code.
+     *  Init() is thread-safe and idempotent.
      */
     static void Init();
 
     /**
      *  Call this to release any memory held privately, such as the font cache.
      */
     static void Term();
 
     /**
      *  Return the version numbers for the library. If the parameter is not
@@ skipping 129 matching lines @@
 public:
     SkAutoGraphics() {
         SkGraphics::Init();
     }
     ~SkAutoGraphics() {
         SkGraphics::Term();
     }
 };
 
 #endif