Provide baseline GC version.

src/mark-compact.h

Index: src/mark-compact.h
diff --git a/src/mark-compact.h b/src/mark-compact.h
index 1b7e60022e57674093ab5b87a1e53da542759b9a..41fb2705d6feafd21e423e0db97cdcbf5c98d8e6 100644
--- a/src/mark-compact.h
+++ b/src/mark-compact.h
@@ -300,6 +300,7 @@ class MarkCompactCollector: public AllStatic {
   //          pointers in the non-live region immediately following each
   //          live region) to speed further passes of the collector.
 
+#ifndef BASELINE_GC
   // Encodes forwarding addresses of objects in compactable parts of the
   // heap.
   static void EncodeForwardingAddresses();
@@ -312,6 +313,7 @@ class MarkCompactCollector: public AllStatic {
   // functions.
   template<AllocationFunction Alloc, ProcessNonLiveFunction ProcessNonLive>
   static void EncodeForwardingAddressesInPagedSpace(PagedSpace* space);
+#endif
 
   // Iterates live objects in a space, passes live objects
   // to a callback function which returns the heap size of the object.
@@ -329,6 +331,7 @@ class MarkCompactCollector: public AllStatic {
   // regions to each space's free list.
   static void SweepSpaces();
 
+#ifndef BASELINE_GC
   // -----------------------------------------------------------------------
   // Phase 3: Updating pointers in live objects.
   //
@@ -388,6 +391,7 @@ class MarkCompactCollector: public AllStatic {
 
   // Copy a new object.
   static int RelocateNewObject(HeapObject* obj);
+#endif
 
 #ifdef DEBUG
   // -----------------------------------------------------------------------