Oilpan: rename GCState and GCReason values to reflect function only.

Source/platform/heap/Heap.h

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 932 matching lines @@
         return allocationSizeFromSize(size) - sizeof(HeapObjectHeader);
     }
     static Address allocateOnHeapIndex(ThreadState*, size_t, int heapIndex, size_t gcInfoIndex);
     template<typename T> static Address allocate(size_t);
     template<typename T> static Address reallocate(void* previous, size_t);
 
     enum GCReason {
         IdleGC,
         PreciseGC,
         ConservativeGC,
-        ForcedGCForTesting,
+        ForcedGC,
         NumberOfGCReason
     };
     static const char* gcReasonString(GCReason);
     static void collectGarbage(ThreadState::StackState, ThreadState::GCType, GCReason);
     static void collectGarbageForTerminatingThread(ThreadState*);
     static void collectAllGarbage();
 
     static void processMarkingStack(Visitor*);
     static void postMarkingProcessing(Visitor*);
     static void globalWeakProcessing(Visitor*);
@@ skipping 1259 matching lines @@
     Value* table = reinterpret_cast<Value*>(pointer);
     for (unsigned i = 0; i < length; ++i) {
         if (!Table::isEmptyOrDeletedBucket(table[i]))
             table[i].~Value();
     }
 }
 
 } // namespace blink
 
 #endif // Heap_h