If we swap its arguments, SkTaskGroup::batch() _is_ sk_parallel_for.

bench/SkGlyphCacheBench.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkGlyphCache.h"
 
@@ skipping 77 matching lines @@
     }
 
     void onDraw(int loops, SkCanvas*) override {
         size_t oldCacheLimitSize = SkGraphics::GetFontCacheLimit();
         SkGraphics::SetFontCacheLimit(fCacheSize);
         SkTypeface* typefaces[] =
             {sk_tool_utils::create_portable_typeface("serif", SkTypeface::kItalic),
              sk_tool_utils::create_portable_typeface("sans-serif", SkTypeface::kItalic)};
 
         for (int work = 0; work < loops; work++) {
-            sk_parallel_for(16, [&](int threadIndex) {
+            SkTaskGroup().batch(16, [&](int threadIndex) {
                 SkPaint paint;
                 paint.setAntiAlias(true);
                 paint.setSubpixelText(true);
                 paint.setTypeface(typefaces[threadIndex % 2]);
                 do_font_stuff(&paint);
             });
         }
         SkGraphics::SetFontCacheLimit(oldCacheLimitSize);
         SkSafeUnref(typefaces[0]);
         SkSafeUnref(typefaces[1]);
     }
 
 private:
     typedef Benchmark INHERITED;
     const size_t fCacheSize;
     SkString fName;
 };
 
 DEF_BENCH( return new SkGlyphCacheBasic(256 * 1024); )
 DEF_BENCH( return new SkGlyphCacheBasic(32 * 1024 * 1024); )
 DEF_BENCH( return new SkGlyphCacheStressTest(256 * 1024); )
 DEF_BENCH( return new SkGlyphCacheStressTest(32 * 1024 * 1024); )