[crankshaft] Generalize PropertyAccessInfo to Name (so it can deal with symbols).

src/hydrogen-instructions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/hydrogen-instructions.h"
 
 #include "src/base/bits.h"
 #include "src/double.h"
 #include "src/elements.h"
 #include "src/factory.h"
@@ skipping 4571 matching lines @@
 HObjectAccess HObjectAccess::ForBackingStoreOffset(int offset,
     Representation representation) {
   DCHECK(offset >= 0);
   return HObjectAccess(kBackingStore, offset, representation,
                        Handle<String>::null(), false, false);
 }
 
 
 HObjectAccess HObjectAccess::ForField(Handle<Map> map, int index,
                                       Representation representation,
-                                      Handle<String> name) {
+                                      Handle<Name> name) {
   if (index < 0) {
     // Negative property indices are in-object properties, indexed
     // from the end of the fixed part of the object.
     int offset = (index * kPointerSize) + map->instance_size();
     return HObjectAccess(kInobject, offset, representation, name, false, true);
   } else {
     // Non-negative property indices are in the properties array.
     int offset = (index * kPointerSize) + FixedArray::kHeaderSize;
     return HObjectAccess(kBackingStore, offset, representation, name,
                          false, false);
@@ skipping 104 matching lines @@
     case HObjectAccess::kExternalMemory:
       os << "[external-memory]";
       break;
   }
 
   return os << "@" << access.offset();
 }
 
 }  // namespace internal
 }  // namespace v8