DataView implementation.

src/objects-visiting.h

Index: src/objects-visiting.h
diff --git a/src/objects-visiting.h b/src/objects-visiting.h
index f347c87e999cfa4d758a22f395bfcc66ef08ac8f..f59a37d0d6339793684918bab035f1c1e2ae6a09 100644
--- a/src/objects-visiting.h
+++ b/src/objects-visiting.h
@@ -95,6 +95,7 @@ class StaticVisitorBase : public AllStatic {
   V(JSWeakMap)                \
   V(JSArrayBuffer)            \
   V(JSTypedArray)             \
+  V(JSDataView)               \
   V(JSRegExp)
 
   // For data objects, JS objects and structs along with generic visitor which
@@ -338,6 +339,7 @@ class StaticNewSpaceVisitor : public StaticVisitorBase {
 
   INLINE(static int VisitJSArrayBuffer(Map* map, HeapObject* object));
   INLINE(static int VisitJSTypedArray(Map* map, HeapObject* object));
+  INLINE(static int VisitJSDataView(Map* map, HeapObject* object));
 
   class DataObjectVisitor {
    public:
@@ -415,6 +417,7 @@ class StaticMarkingVisitor : public StaticVisitorBase {
   INLINE(static void VisitJSRegExp(Map* map, HeapObject* object));
   INLINE(static void VisitJSArrayBuffer(Map* map, HeapObject* object));
   INLINE(static void VisitJSTypedArray(Map* map, HeapObject* object));
+  INLINE(static void VisitJSDataView(Map* map, HeapObject* object));
   INLINE(static void VisitNativeContext(Map* map, HeapObject* object));
 
   // Mark pointers in a Map and its TransitionArray together, possibly