Improved diagnostic message for JS heap out of memory

src/heap/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 548 matching lines @@
   // given alignment.
   static int GetMaximumFillToAlign(AllocationAlignment alignment);
   // Calculates the actual amount of filler required for a given address at the
   // given alignment.
   static int GetFillToAlign(Address address, AllocationAlignment alignment);
 
   template <typename T>
   static inline bool IsOneByte(T t, int chars);
 
   static void FatalProcessOutOfMemory(const char* location,
-                                      bool take_snapshot = false);
+                                      bool is_heap_oom = false);
 
   static bool RootIsImmortalImmovable(int root_index);
 
   // Checks whether the space is valid.
   static bool IsValidAllocationSpace(AllocationSpace space);
 
   // Generated code can embed direct references to non-writable roots if
   // they are in new space.
   static bool RootCanBeWrittenAfterInitialization(RootListIndex root_index);
 
@@ skipping 2081 matching lines @@
   friend class LargeObjectSpace;
   friend class NewSpace;
   friend class PagedSpace;
   DISALLOW_COPY_AND_ASSIGN(AllocationObserver);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_