[snapshot] support including templates in the snapshot.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 3c85fec0f722a7e5f4e89d5b88b1bc3bc31984a2..2162f9c79669c819db705503e4448310e4e3948f 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -197,7 +197,8 @@ using v8::MemoryPressureLevel;
   V(Map, bytecode_array_map, BytecodeArrayMap)                                 \
   V(WeakCell, empty_weak_cell, EmptyWeakCell)                                  \
   V(PropertyCell, has_instance_protector, HasInstanceProtector)                \
-  V(Cell, species_protector, SpeciesProtector)
+  V(Cell, species_protector, SpeciesProtector)                                 \
+  V(FixedArray, serialized_templates, SerializedTemplates)
 
 // Entries in this list are limited to Smis and are not visited during GC.
 #define SMI_ROOT_LIST(V)                                                       \
@@ -807,6 +808,8 @@ class Heap {
   inline void SetInterpreterEntryReturnPCOffset(int pc_offset);
   inline int GetNextTemplateSerialNumber();
 
+  inline void SetSerializedTemplates(FixedArray* templates);
+
   // For post mortem debugging.
   void RememberUnmappedPage(Address page, bool compacted);