Add support for keyed-call on arrays of fast elements

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index 6aa82177cf8aa1a5581d153b93abf5c19633e29a..c7e7d1e78286bf37ed9d58b4cc881f68ba4300cf 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -1538,12 +1538,13 @@ class HGraphBuilder {
 
     JSArrayBuilder(HGraphBuilder* builder,
                    ElementsKind kind,
-                   HValue* constructor_function);
+                   HValue* constructor_function = NULL);
 
     HValue* AllocateEmptyArray();
     HValue* AllocateArray(HValue* capacity, HValue* length_field,
                           bool fill_with_hole);
     HValue* GetElementsLocation() { return elements_location_; }
+    HValue* EmitMapCode();
 
    private:
     Zone* zone() const { return builder_->zone(); }
@@ -1557,7 +1558,6 @@ class HGraphBuilder {
       return JSArray::kPreallocatedArrayElements;
     }
 
-    HValue* EmitMapCode();
     HValue* EmitInternalMapCode();
     HValue* EstablishEmptyArrayAllocationSize();
     HValue* EstablishAllocationSize(HValue* length_node);