Fix x64 build after executable memory limit change.

src/spaces.h

 // Copyright 2006-2008 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 474 matching lines @@
 // induces a constraint on the order of pages in a linked lists. We say that
 // pages are linked in the chunk-order if and only if every two consecutive
 // pages from the same chunk are consecutive in the linked list.
 //
 
 
 class MemoryAllocator : public AllStatic {
  public:
   // Initializes its internal bookkeeping structures.
   // Max capacity of the total space and executable memory limit.
-  static bool Setup(int max_capacity, int capacity_executable);
+  static bool Setup(intptr_t max_capacity, intptr_t capacity_executable);
 
   // Deletes valid chunks.
   static void TearDown();
 
   // Reserves an initial address range of virtual memory to be split between
   // the two new space semispaces, the old space, and the map space.  The
   // memory is not yet committed or assigned to spaces and split into pages.
   // The initial chunk is unmapped when the memory allocator is torn down.
   // This function should only be called when there is not already a reserved
   // initial chunk (initial_chunk_ should be NULL).  It returns the start
@@ skipping 1763 matching lines @@
 
  private:
   LargeObjectChunk* current_;
   HeapObjectCallback size_func_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_SPACES_H_