Revert of SkThreadPool ~~> SkTaskGroup

tests/PathOpsThreadedCommon.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef PathOpsThreadedCommon_DEFINED
 #define PathOpsThreadedCommon_DEFINED
 
 #include "SkGraphics.h"
@@ skipping 15 matching lines @@
     unsigned char fD;
     char* fPathStr;
     const char* fKey;
     char fSerialNo[256];
     skiatest::Reporter* fReporter;
     SkBitmap* fBitmap;
 };
 
 class PathOpsThreadedTestRunner {
 public:
-    PathOpsThreadedTestRunner(skiatest::Reporter* reporter) : fReporter(reporter) {}
+    PathOpsThreadedTestRunner(skiatest::Reporter* reporter, int threadCount)
+        : fNumThreads(threadCount)
+        , fReporter(reporter) {
+    }
 
     ~PathOpsThreadedTestRunner();
 
     void render();
 
 public:
+    int fNumThreads;
     SkTDArray<PathOpsThreadedRunnable*> fRunnables;
     skiatest::Reporter* fReporter;
 };
 
 class PathOpsThreadedRunnable : public SkRunnable {
 public:
     PathOpsThreadedRunnable(void (*testFun)(PathOpsThreadState*), int a, int b, int c, int d,
             PathOpsThreadedTestRunner* runner) {
         fState.fA = a;
         fState.fB = b;
@@ skipping 28 matching lines @@
         SkGraphics::SetTLSFontCacheLimit(1 * 1024 * 1024);
         (*fTestFun)(&fState);
     }
 
 private:
     PathOpsThreadState fState;
     void (*fTestFun)(PathOpsThreadState*);
 };
 
 #endif