A64: Synchronize with r15358.

src/factory.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 134 matching lines @@
       int length,
       PretenureFlag pretenure = NOT_TENURED);
   Handle<SeqTwoByteString> NewRawTwoByteString(
       int length,
       PretenureFlag pretenure = NOT_TENURED);
 
   // Create a new cons string object which consists of a pair of strings.
   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,
                               int end);
 
   // Create a new string object which holds a proper substring of a string.
   Handle<String> NewProperSubString(Handle<String> str,
                                     int begin,
                                     int end);
 
@@ skipping 156 matching lines @@
   void EnsureCanContainHeapObjectElements(Handle<JSArray> array);
   void EnsureCanContainElements(Handle<JSArray> array,
                                 Handle<FixedArrayBase> elements,
                                 uint32_t length,
                                 EnsureElementsMode mode);
 
   Handle<JSArrayBuffer> NewJSArrayBuffer();
 
   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.
   void BecomeJSObject(Handle<JSReceiver> object);
   void BecomeJSFunction(Handle<JSReceiver> object);
 
   void SetIdentityHash(Handle<JSObject> object, Smi* hash);
 
   Handle<JSFunction> NewFunction(Handle<String> name,
                                  Handle<Object> prototype);
@@ skipping 214 matching lines @@
   } else {
     return NewNumber(static_cast<double>(value), pretenure);
   }
 }
 
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_