A64: Synchronize with r15358.

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index cde84325dcf755c059618672157427a97dc97c7e..0cb715772909cbf17b19a03b86c21c3ba3f81782 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -152,6 +152,10 @@ class Factory {
   Handle<String> NewConsString(Handle<String> first,
                                Handle<String> second);
 
+  // Create a new sequential string containing the concatenation of the inputs.
+  Handle<String> NewFlatConcatString(Handle<String> first,
+                                     Handle<String> second);
+
   // Create a new string object which holds a substring of a string.
   Handle<String> NewSubString(Handle<String> str,
                               int begin,
@@ -328,6 +332,8 @@ class Factory {
 
   Handle<JSTypedArray> NewJSTypedArray(ExternalArrayType type);
 
+  Handle<JSDataView> NewJSDataView();
+
   Handle<JSProxy> NewJSProxy(Handle<Object> handler, Handle<Object> prototype);
 
   // Change the type of the argument into a JS object/function and reinitialize.