Revert of SkThreadPool ~~> SkTaskGroup

tests/Test.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef skiatest_Test_DEFINED
 #define skiatest_Test_DEFINED
 
@@ skipping 14 matching lines @@
         SK_DECLARE_INST_COUNT(Reporter)
         Reporter();
 
         int countTests() const { return fTestCount; }
 
         void startTest(Test*);
         void reportFailed(const SkString& desc);
         void endTest(Test*);
 
         virtual bool allowExtendedTest() const { return false; }
+        virtual bool allowThreaded() const { return false; }
         virtual bool verbose() const { return false; }
         virtual void bumpTestCount() { sk_atomic_inc(&fTestCount); }
 
     protected:
         virtual void onStart(Test*) {}
         virtual void onReportFailed(const SkString& desc) {}
         virtual void onEnd(Test*) {}
 
     private:
         int32_t fTestCount;
@@ skipping 120 matching lines @@
         }                                                             \
         virtual void onRun(Reporter* r) SK_OVERRIDE {                 \
             test_##name(r, fGrContextFactory);                        \
         }                                                             \
     };                                                                \
     static TestRegistry gReg_##name##Class(name##Class::Factory);     \
     }                                                                 \
     static void test_##name(skiatest::Reporter* reporter, GrContextFactory* factory)
 
 #endif