Remove strong mode support from property loads.

src/code-stubs.h

 // 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.
 
 #ifndef V8_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/codegen.h"
@@ skipping 2056 matching lines @@
  public:
   explicit LoadDictionaryElementStub(Isolate* isolate, const LoadICState& state)
       : HydrogenCodeStub(isolate) {
     minor_key_ = state.GetExtraICState();
   }
 
   CallInterfaceDescriptor GetCallInterfaceDescriptor() const override {
     return LoadWithVectorDescriptor(isolate());
   }
 
-  LanguageMode language_mode() const {
-    return LoadICState::GetLanguageMode(MinorKey());
-  }
-
   DEFINE_HYDROGEN_CODE_STUB(LoadDictionaryElement, HydrogenCodeStub);
 };
 
 
 class KeyedLoadGenericStub : public HydrogenCodeStub {
  public:
   explicit KeyedLoadGenericStub(Isolate* isolate, const LoadICState& state)
       : HydrogenCodeStub(isolate) {
     minor_key_ = state.GetExtraICState();
   }
 
   Code::Kind GetCodeKind() const override { return Code::KEYED_LOAD_IC; }
   InlineCacheState GetICState() const override { return GENERIC; }
 
-  LanguageMode language_mode() const {
-    return LoadICState::GetLanguageMode(MinorKey());
-  }
-
   DEFINE_CALL_INTERFACE_DESCRIPTOR(Load);
 
   DEFINE_HYDROGEN_CODE_STUB(KeyedLoadGeneric, HydrogenCodeStub);
 };
 
 
 class LoadICTrampolineStub : public PlatformCodeStub {
  public:
   LoadICTrampolineStub(Isolate* isolate, const LoadICState& state)
       : PlatformCodeStub(isolate) {
@@ skipping 855 matching lines @@
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 extern Representation RepresentationFromType(Type* type);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_STUBS_H_