Replace uses of GR_DEBUG by SK_DEBUG.

tests/LListTest.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 "Test.h"
 #include "SkRandom.h"
 #include "SkTInternalLList.h"
@@ skipping 20 matching lines @@
 SK_DEFINE_INST_COUNT(ListElement);
 
 static void check_list(const SkTInternalLList<ListElement>& list,
                        skiatest::Reporter* reporter,
                        bool empty,
                        int numElements,
                        bool in0, bool in1, bool in2, bool in3,
                        ListElement elements[4]) {
 
     REPORTER_ASSERT(reporter, empty == list.isEmpty());
-#if SK_DEBUG
+#ifdef SK_DEBUG
     list.validate();
     REPORTER_ASSERT(reporter, numElements == list.countEntries());
     REPORTER_ASSERT(reporter, in0 == list.isInList(&elements[0]));
     REPORTER_ASSERT(reporter, in1 == list.isInList(&elements[1]));
     REPORTER_ASSERT(reporter, in2 == list.isInList(&elements[2]));
     REPORTER_ASSERT(reporter, in3 == list.isInList(&elements[3]));
 #endif
 }
 
 static void TestTInternalLList(skiatest::Reporter* reporter) {
@@ skipping 260 matching lines @@
     }
 }
 
 static void test_llists(skiatest::Reporter* reporter) {
     TestTInternalLList(reporter);
     TestTLList(reporter);
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("LList", TestLListClass, test_llists)