| Index: src/heap/heap.h
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| diff --git a/src/heap/heap.h b/src/heap/heap.h
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| index 8eeb04f0cd4b2ea868113a299498ed939143aca7..3919bdcc2c877f801bb33b36256d622b463cd751 100644
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| --- a/src/heap/heap.h
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| +++ b/src/heap/heap.h
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| @@ -817,6 +817,7 @@ class Heap {
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|    // TODO(hpayer): There is still a missmatch between capacity and actual
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|    // committed memory size.
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|    bool CanExpandOldGeneration(int size) {
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| +    if (force_oom_) return false;
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|      return (CommittedOldGenerationMemory() + size) < MaxOldGenerationSize();
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|    }
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|  
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| @@ -2117,6 +2118,8 @@ class Heap {
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|  
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|    MUST_USE_RESULT AllocationResult InternalizeString(String* str);
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|  
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| +  void set_force_oom(bool value) { force_oom_ = value; }
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| +
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|    // The amount of external memory registered through the API kept alive
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|    // by global handles
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|    int64_t amount_of_external_allocated_memory_;
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| @@ -2365,6 +2368,9 @@ class Heap {
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|  
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|    ArrayBufferTracker* array_buffer_tracker_;
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|  
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| +  // Used for testing purposes.
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| +  bool force_oom_;
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| +
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|    // Classes in "heap" can be friends.
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|    friend class AlwaysAllocateScope;
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|    friend class GCCallbacksScope;
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| 
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