Revert of SkThreadPool ~~> SkTaskGroup

tests/PathOpsSimplifyQuadralateralsThreadedTest.cpp

Index: tests/PathOpsSimplifyQuadralateralsThreadedTest.cpp
diff --git a/tests/PathOpsSimplifyQuadralateralsThreadedTest.cpp b/tests/PathOpsSimplifyQuadralateralsThreadedTest.cpp
index f8e9a6e3dc3b549cd07b35817d1ae635e30ce4a4..afa9200389e9c7b993aac791bd2f0ee1b9cc0c86 100755
--- a/tests/PathOpsSimplifyQuadralateralsThreadedTest.cpp
+++ b/tests/PathOpsSimplifyQuadralateralsThreadedTest.cpp
@@ -76,8 +76,8 @@
 }
 
 DEF_TEST(PathOpsSimplifyQuadralateralsThreaded, reporter) {
-    initializeTests(reporter, "testQuadralaterals");
-    PathOpsThreadedTestRunner testRunner(reporter);
+    int threadCount = initializeTests(reporter, "testQuadralaterals");
+    PathOpsThreadedTestRunner testRunner(reporter, threadCount);
     for (int a = 0; a < 16; ++a) {
         for (int b = a ; b < 16; ++b) {
             for (int c = b ; c < 16; ++c) {