Revert of SkThreadPool ~~> SkTaskGroup

tests/PathOpsSimplifyTrianglesThreadedTest.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "PathOpsExtendedTest.h"
 #include "PathOpsThreadedCommon.h"
 
 static void testSimplifyTrianglesMain(PathOpsThreadState* data) {
@@ skipping 55 matching lines @@
                     outputProgress(state.fPathStr, pathStr, SkPath::kEvenOdd_FillType);
                 }
                 ShowTestName(&state, d, e, f, 1);
                 testSimplify(path, true, out, state, pathStr);
             }
         }
     }
 }
 
 DEF_TEST(PathOpsSimplifyTrianglesThreaded, reporter) {
-    initializeTests(reporter, "testTriangles");
-    PathOpsThreadedTestRunner testRunner(reporter);
+    int threadCount = initializeTests(reporter, "testTriangles");
+    PathOpsThreadedTestRunner testRunner(reporter, threadCount);
     for (int a = 0; a < 15; ++a) {
         int ax = a & 0x03;
         int ay = a >> 2;
         for (int b = a + 1; b < 16; ++b) {
             int bx = b & 0x03;
             int by = b >> 2;
             for (int c = a + 1; c < 16; ++c) {
                 if (b == c) {
                     continue;
                 }
                 int cx = c & 0x03;
                 int cy = c >> 2;
                 if ((bx - ax) * (cy - ay) == (by - ay) * (cx - ax)) {
                     continue;
                 }
                 *testRunner.fRunnables.append() = SkNEW_ARGS(PathOpsThreadedRunnable,
                         (&testSimplifyTrianglesMain, a, b, c, 0, &testRunner));
             }
             if (!reporter->allowExtendedTest()) goto finish;
         }
     }
 finish:
     testRunner.render();
 }