Temporary fix for test-heap/OldSpaceAllocationCounter.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5468 matching lines @@
     start = counter;
   }
 }
 
 
 TEST(OldSpaceAllocationCounter) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
   Isolate* isolate = CcTest::i_isolate();
   Heap* heap = isolate->heap();
+  // TODO(ulan): remove this GC after fixing no-snapshot failure.
+  heap->CollectGarbage(OLD_SPACE);
   size_t counter1 = heap->OldGenerationAllocationCounter();
   heap->CollectGarbage(NEW_SPACE);
   const size_t kSize = 1024;
   AllocateInSpace(isolate, kSize, OLD_SPACE);
   size_t counter2 = heap->OldGenerationAllocationCounter();
   CHECK_EQ(kSize, counter2 - counter1);
   heap->CollectGarbage(NEW_SPACE);
   size_t counter3 = heap->OldGenerationAllocationCounter();
   CHECK_EQ(0, counter3 - counter2);
   AllocateInSpace(isolate, kSize, OLD_SPACE);
@@ skipping 134 matching lines @@
   size_t counter2 = 2000;
   tracer->SampleAllocation(time2, counter2, counter2);
   size_t bytes = tracer->AllocatedBytesInLast(1000);
   CHECK_EQ(20000, bytes);
   int time3 = 1000;
   size_t counter3 = 30000;
   tracer->SampleAllocation(time3, counter3, counter3);
   bytes = tracer->AllocatedBytesInLast(100);
   CHECK_EQ(2 * (counter3 - counter1) * 100 / (time3 - time1), bytes);
 }