[strong] Implement strong property access semantics

src/messages.h

 // Copyright 2006-2008 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.
 
 // The infrastructure used for (localized) message reporting in V8.
 //
 // Note: there's a big unresolved issue about ownership of the data
 // structures used by this framework.
 
 #ifndef V8_MESSAGES_H_
@@ skipping 358 matching lines @@
   T(StrongEllision,                                                            \
     "In strong mode, arrays with holes are deprecated, use maps instead")      \
   T(StrongEmpty,                                                               \
     "In strong mode, empty sub-statements are deprecated, make them explicit " \
     "with '{}' instead")                                                       \
   T(StrongEqual,                                                               \
     "In strong mode, '==' and '!=' are deprecated, use '===' and '!==' "       \
     "instead")                                                                 \
   T(StrongForIn,                                                               \
     "In strong mode, 'for'-'in' loops are deprecated, use 'for'-'of' instead") \
+  T(StrongPropertyAccess,                                                      \
+    "In strong mode, accessing missing property '%' of % is deprecated")       \
   T(StrongSuperCallDuplicate,                                                  \
     "In strong mode, invoking the super constructor multiple times is "        \
     "deprecated")                                                              \
   T(StrongSuperCallMisplaced,                                                  \
     "In strong mode, the super constructor must be invoked before any "        \
     "assignment to 'this'")                                                    \
   T(StrongSwitchFallthrough,                                                   \
     "In strong mode, switch fall-through is deprecated, terminate each case "  \
     "with 'break', 'continue', 'return' or 'throw'")                           \
   T(StrongUndefined,                                                           \
@@ skipping 64 matching lines @@
 
   static void DefaultMessageReport(Isolate* isolate, const MessageLocation* loc,
                                    Handle<Object> message_obj);
   static Handle<String> GetMessage(Isolate* isolate, Handle<Object> data);
   static SmartArrayPointer<char> GetLocalizedMessage(Isolate* isolate,
                                                      Handle<Object> data);
 };
 } }  // namespace v8::internal
 
 #endif  // V8_MESSAGES_H_