Remove strong mode support from property loads.

src/objects.h

 // Copyright 2015 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 1197 matching lines @@
   MUST_USE_RESULT static MaybeHandle<Object> BitwiseAnd(Isolate* isolate,
                                                         Handle<Object> lhs,
                                                         Handle<Object> rhs);
   MUST_USE_RESULT static MaybeHandle<Object> BitwiseOr(Isolate* isolate,
                                                        Handle<Object> lhs,
                                                        Handle<Object> rhs);
   MUST_USE_RESULT static MaybeHandle<Object> BitwiseXor(Isolate* isolate,
                                                         Handle<Object> lhs,
                                                         Handle<Object> rhs);
 
-  MUST_USE_RESULT static MaybeHandle<Object> GetProperty(
-      LookupIterator* it, LanguageMode language_mode = SLOPPY);
+  MUST_USE_RESULT static MaybeHandle<Object> GetProperty(LookupIterator* it);
 
   // ES6 [[Set]] (when passed DONT_THROW)
   // Invariants for this and related functions (unless stated otherwise):
   // 1) When the result is Nothing, an exception is pending.
   // 2) When passed THROW_ON_ERROR, the result is never Just(false).
   // In some cases, an exception is thrown regardless of the ShouldThrow
   // argument.  These cases are either in accordance with the spec or not
   // covered by it (eg., concerning API callbacks).
   MUST_USE_RESULT static Maybe<bool> SetProperty(LookupIterator* it,
                                                  Handle<Object> value,
                                                  LanguageMode language_mode,
                                                  StoreFromKeyed store_mode);
   MUST_USE_RESULT static MaybeHandle<Object> SetProperty(
       Handle<Object> object, Handle<Name> name, Handle<Object> value,
       LanguageMode language_mode,
       StoreFromKeyed store_mode = MAY_BE_STORE_FROM_KEYED);
 
   MUST_USE_RESULT static Maybe<bool> SetSuperProperty(
       LookupIterator* it, Handle<Object> value, LanguageMode language_mode,
       StoreFromKeyed store_mode);
 
   MUST_USE_RESULT static MaybeHandle<Object> ReadAbsentProperty(
-      LookupIterator* it, LanguageMode language_mode);
+      LookupIterator* it);
   MUST_USE_RESULT static MaybeHandle<Object> ReadAbsentProperty(
-      Isolate* isolate, Handle<Object> receiver, Handle<Object> name,
-      LanguageMode language_mode);
+      Isolate* isolate, Handle<Object> receiver, Handle<Object> name);
   MUST_USE_RESULT static Maybe<bool> CannotCreateProperty(
       Isolate* isolate, Handle<Object> receiver, Handle<Object> name,
       Handle<Object> value, ShouldThrow should_throw);
   MUST_USE_RESULT static Maybe<bool> WriteToReadOnlyProperty(
       LookupIterator* it, Handle<Object> value, ShouldThrow should_throw);
   MUST_USE_RESULT static Maybe<bool> WriteToReadOnlyProperty(
       Isolate* isolate, Handle<Object> receiver, Handle<Object> name,
       Handle<Object> value, ShouldThrow should_throw);
   MUST_USE_RESULT static Maybe<bool> RedefineIncompatibleProperty(
       Isolate* isolate, Handle<Object> name, Handle<Object> value,
       ShouldThrow should_throw);
   MUST_USE_RESULT static Maybe<bool> SetDataProperty(LookupIterator* it,
                                                      Handle<Object> value);
   MUST_USE_RESULT static Maybe<bool> AddDataProperty(
       LookupIterator* it, Handle<Object> value, PropertyAttributes attributes,
       ShouldThrow should_throw, StoreFromKeyed store_mode);
   MUST_USE_RESULT static inline MaybeHandle<Object> GetPropertyOrElement(
-      Handle<Object> object, Handle<Name> name,
-      LanguageMode language_mode = SLOPPY);
+      Handle<Object> object, Handle<Name> name);
   MUST_USE_RESULT static inline MaybeHandle<Object> GetPropertyOrElement(
-      Handle<Object> receiver, Handle<Name> name, Handle<JSReceiver> holder,
-      LanguageMode language_mode = SLOPPY);
+      Handle<Object> receiver, Handle<Name> name, Handle<JSReceiver> holder);
   MUST_USE_RESULT static inline MaybeHandle<Object> GetProperty(
-      Isolate* isolate, Handle<Object> object, const char* key,
-      LanguageMode language_mode = SLOPPY);
+      Isolate* isolate, Handle<Object> object, const char* key);
   MUST_USE_RESULT static inline MaybeHandle<Object> GetProperty(
-      Handle<Object> object, Handle<Name> name,
-      LanguageMode language_mode = SLOPPY);
+      Handle<Object> object, Handle<Name> name);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithAccessor(
-      LookupIterator* it, LanguageMode language_mode);
+      LookupIterator* it);
   MUST_USE_RESULT static Maybe<bool> SetPropertyWithAccessor(
       LookupIterator* it, Handle<Object> value, ShouldThrow should_throw);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithDefinedGetter(
       Handle<Object> receiver,
       Handle<JSReceiver> getter);
   MUST_USE_RESULT static Maybe<bool> SetPropertyWithDefinedSetter(
       Handle<Object> receiver, Handle<JSReceiver> setter, Handle<Object> value,
       ShouldThrow should_throw);
 
   MUST_USE_RESULT static inline MaybeHandle<Object> GetElement(
-      Isolate* isolate, Handle<Object> object, uint32_t index,
-      LanguageMode language_mode = SLOPPY);
+      Isolate* isolate, Handle<Object> object, uint32_t index);
 
   MUST_USE_RESULT static inline MaybeHandle<Object> SetElement(
       Isolate* isolate, Handle<Object> object, uint32_t index,
       Handle<Object> value, LanguageMode language_mode);
 
   // Returns the permanent hash code associated with this object. May return
   // undefined if not yet created.
   Object* GetHash();
 
   // Returns undefined for JSObjects, but returns the hash code for simple
@@ skipping 8440 matching lines @@
       PropertyDescriptor* desc, ShouldThrow should_throw);
 
   // ES6 9.5.7
   MUST_USE_RESULT static Maybe<bool> HasProperty(Isolate* isolate,
                                                  Handle<JSProxy> proxy,
                                                  Handle<Name> name);
 
   // ES6 9.5.8
   MUST_USE_RESULT static MaybeHandle<Object> GetProperty(
       Isolate* isolate, Handle<JSProxy> proxy, Handle<Name> name,
-      Handle<Object> receiver, LanguageMode language_mode);
+      Handle<Object> receiver);
 
   // ES6 9.5.9
   MUST_USE_RESULT static Maybe<bool> SetProperty(Handle<JSProxy> proxy,
                                                  Handle<Name> name,
                                                  Handle<Object> value,
                                                  Handle<Object> receiver,
                                                  LanguageMode language_mode);
 
   // ES6 9.5.10 (when passed SLOPPY)
   MUST_USE_RESULT static Maybe<bool> DeletePropertyOrElement(
@@ skipping 1089 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_