Fix Windows x64 build broken by r5299.

src/spaces-inl.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 225 matching lines @@
   } else {
     flags_ = (flags_ & ~(1 << WATERMARK_INVALIDATED)) |
              (watermark_invalidated_mark_ ^ (1 << WATERMARK_INVALIDATED));
   }
 
   ASSERT(IsWatermarkValid() == !value);
 }
 
 
 bool Page::GetPageFlag(PageFlag flag) {
-  return (flags_ & (1 << flag)) != 0;
+  return (flags_ & static_cast<intptr_t>(1 << flag)) != 0;
 }
 
 
 void Page::SetPageFlag(PageFlag flag, bool value) {
   if (value) {
-    flags_ |= (1 << flag);
+    flags_ |= static_cast<intptr_t>(1 << flag);
   } else {
-    flags_ &= ~(1 << flag);
+    flags_ &= ~static_cast<intptr_t>(1 << flag);
   }
 }
 
 
 void Page::ClearPageFlags() {
   flags_ = 0;
 }
 
 
 void Page::ClearGCFields() {
@@ skipping 219 matching lines @@
 
 bool FreeListNode::IsFreeListNode(HeapObject* object) {
   return object->map() == Heap::raw_unchecked_byte_array_map()
       || object->map() == Heap::raw_unchecked_one_pointer_filler_map()
       || object->map() == Heap::raw_unchecked_two_pointer_filler_map();
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_SPACES_INL_H_