SkDiscardableMemoryPool to abstract class

tests/DiscardableMemoryPoolTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkDiscardableMemoryPool.h"
 
 #include "Test.h"
 
 DEF_TEST(DiscardableMemoryPool, reporter) {
     SkAutoTUnref<SkDiscardableMemoryPool> pool(
-        SkNEW_ARGS(SkDiscardableMemoryPool, (1, NULL)));
+        SkDiscardableMemoryPool::Create(1, NULL));
     pool->setRAMBudget(3);
     REPORTER_ASSERT(reporter, 0 == pool->getRAMUsed());
 
     SkAutoTDelete<SkDiscardableMemory> dm1(pool->create(100));
     REPORTER_ASSERT(reporter, dm1->data() != NULL);
     REPORTER_ASSERT(reporter, 100 == pool->getRAMUsed());
     dm1->unlock();
     REPORTER_ASSERT(reporter, 0 == pool->getRAMUsed());
     REPORTER_ASSERT(reporter, !dm1->lock());
 
 
     SkAutoTDelete<SkDiscardableMemory> dm2(pool->create(200));
     REPORTER_ASSERT(reporter, 200 == pool->getRAMUsed());
     pool->setRAMBudget(400);
     dm2->unlock();
     REPORTER_ASSERT(reporter, 200 == pool->getRAMUsed());
     REPORTER_ASSERT(reporter, dm2->lock());
     dm2->unlock();
     pool->dumpPool();
     REPORTER_ASSERT(reporter, !dm2->lock());
     REPORTER_ASSERT(reporter, 0 == pool->getRAMUsed());
 }