Enable constant pool support.

src/heap/spaces.h

Index: src/heap/spaces.h
diff --git a/src/heap/spaces.h b/src/heap/spaces.h
index 0272d59944149009fe3c01a6941052520772a1ec..e06f9eee113e7bade9af6499c6a7d4c3c00cbed0 100644
--- a/src/heap/spaces.h
+++ b/src/heap/spaces.h
@@ -34,7 +34,7 @@ class Isolate;
 // area.
 //
 // There is a separate large object space for objects larger than
-// Page::kMaxHeapObjectSize, so that they do not have to move during
+// Page::kMaxRegularHeapObjectSize, so that they do not have to move during
 // collection. The large object space is paged. Pages in large object space
 // may be larger than the page size.
 //
@@ -2692,9 +2692,9 @@ class CellSpace : public PagedSpace {
 
 
 // -----------------------------------------------------------------------------
-// Large objects ( > Page::kMaxHeapObjectSize ) are allocated and managed by
-// the large object space. A large object is allocated from OS heap with
-// extra padding bytes (Page::kPageSize + Page::kObjectStartOffset).
+// Large objects ( > Page::kMaxRegularHeapObjectSize ) are allocated and
+// managed by the large object space. A large object is allocated from OS
+// heap with extra padding bytes (Page::kPageSize + Page::kObjectStartOffset).
 // A large object always starts at Page::kObjectStartOffset to a page.
 // Large objects do not move during garbage collections.