Revert of Blink-compatible serialization of arrays, both dense and sparse.

src/value-serializer.h

Index: src/value-serializer.h
diff --git a/src/value-serializer.h b/src/value-serializer.h
index 8de7d56920cd9e1607a4af196e2893cb45abfcf4..efb5a9675393ddc0f5dbb026f356e395ff59a9e9 100644
--- a/src/value-serializer.h
+++ b/src/value-serializer.h
@@ -72,7 +72,6 @@
   void WriteString(Handle<String> string);
   Maybe<bool> WriteJSReceiver(Handle<JSReceiver> receiver) WARN_UNUSED_RESULT;
   Maybe<bool> WriteJSObject(Handle<JSObject> object) WARN_UNUSED_RESULT;
-  Maybe<bool> WriteJSArray(Handle<JSArray> array) WARN_UNUSED_RESULT;
 
   /*
    * Reads the specified keys from the object and writes key-value pairs to the
@@ -141,8 +140,6 @@
   MaybeHandle<String> ReadUtf8String() WARN_UNUSED_RESULT;
   MaybeHandle<String> ReadTwoByteString() WARN_UNUSED_RESULT;
   MaybeHandle<JSObject> ReadJSObject() WARN_UNUSED_RESULT;
-  MaybeHandle<JSArray> ReadSparseJSArray() WARN_UNUSED_RESULT;
-  MaybeHandle<JSArray> ReadDenseJSArray() WARN_UNUSED_RESULT;
 
   /*
    * Reads key-value pairs into the object until the specified end tag is