Add GetProperty/GetElement to JSReceiver and use it where possible

src/debug/liveedit.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_DEBUG_LIVEEDIT_H_
 #define V8_DEBUG_LIVEEDIT_H_
 
 
 // Live Edit feature implementation.
 // User should be able to change script on already running VM. This feature
@@ skipping 234 matching lines @@
   void SetField(int field_position, Handle<Object> value) {
     Object::SetElement(isolate(), array_, field_position, value, SLOPPY)
         .Assert();
   }
 
   void SetSmiValueField(int field_position, int value) {
     SetField(field_position, Handle<Smi>(Smi::FromInt(value), isolate()));
   }
 
   Handle<Object> GetField(int field_position) {
-    return Object::GetElement(
-        isolate(), array_, field_position).ToHandleChecked();
+    return JSReceiver::GetElement(isolate(), array_, field_position)
+        .ToHandleChecked();
   }
 
   int GetSmiValueField(int field_position) {
     Handle<Object> res = GetField(field_position);
     return Handle<Smi>::cast(res)->value();
   }
 
  private:
   Handle<JSArray> array_;
 };
@@ skipping 59 matching lines @@
 
 
 // Wraps SharedFunctionInfo along with some of its fields for passing it
 // back to JavaScript. SharedFunctionInfo object itself is additionally
 // wrapped into BlindReference for sanitizing reasons.
 class SharedInfoWrapper : public JSArrayBasedStruct<SharedInfoWrapper> {
  public:
   static bool IsInstance(Handle<JSArray> array) {
     if (array->length() != Smi::FromInt(kSize_)) return false;
     Handle<Object> element(
-        Object::GetElement(array->GetIsolate(),
-                           array,
-                           kSharedInfoOffset_).ToHandleChecked());
+        JSReceiver::GetElement(array->GetIsolate(), array, kSharedInfoOffset_)
+            .ToHandleChecked());
     if (!element->IsJSValue()) return false;
     return Handle<JSValue>::cast(element)->value()->IsSharedFunctionInfo();
   }
 
   explicit SharedInfoWrapper(Handle<JSArray> array)
       : JSArrayBasedStruct<SharedInfoWrapper>(array) {
   }
 
   void SetProperties(Handle<String> name,
                      int start_position,
                      int end_position,
                      Handle<SharedFunctionInfo> info);
 
   Handle<SharedFunctionInfo> GetInfo();
 
  private:
   static const int kFunctionNameOffset_ = 0;
   static const int kStartPositionOffset_ = 1;
   static const int kEndPositionOffset_ = 2;
   static const int kSharedInfoOffset_ = 3;
   static const int kSize_ = 4;
 
   friend class JSArrayBasedStruct<SharedInfoWrapper>;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif /* V8_DEBUG_LIVEEDIT_H_ */