Move SkAtomics.h to private.

src/core/SkTaskGroup.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTaskGroup_DEFINED
 #define SkTaskGroup_DEFINED
 
 #include "SkTypes.h"
-#include "SkAtomics.h"
+#include "../private/SkAtomics.h"
 #include "SkTemplates.h"
 
 struct SkRunnable;
 
 class SkTaskGroup : SkNoncopyable {
 public:
     // Create one of these in main() to enable SkTaskGroups globally.
     struct Enabler : SkNoncopyable {
         explicit Enabler(int threads = -1);  // Default is system-reported core count.
         ~Enabler();
@@ skipping 59 matching lines @@
 
     void(*run_chunk)(Chunk*) = [](Chunk* c) {
         for (int i = c->start; i < c->end; i++) {
             (*c->f)(i);
         }
     };
     SkTaskGroup().batch(run_chunk, chunks.get(), nchunks);
 }
 
 #endif//SkTaskGroup_DEFINED