Remove {FIRST,LAST}_SPEC_OBJECT_TYPE.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index cd5b9f86e50ad2e7934fbeda0316097a811c70d2..cca6227a6bd8d1d65636a89d696f2f72caddac2b 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -710,8 +710,7 @@ enum InstanceType {
   // All the following types are subtypes of JSReceiver, which corresponds to
   // objects in the JS sense. The first and the last type in this range are
   // the two forms of function. This organization enables using the same
-  // compares for checking the JS_RECEIVER/SPEC_OBJECT range and the
-  // NONCALLABLE_JS_OBJECT range.
+  // compares for checking the JS_RECEIVER and the NONCALLABLE_JS_OBJECT range.
   JS_FUNCTION_PROXY_TYPE,  // FIRST_JS_RECEIVER_TYPE, FIRST_JS_PROXY_TYPE
   JS_PROXY_TYPE,           // LAST_JS_PROXY_TYPE
   JS_VALUE_TYPE,           // FIRST_JS_OBJECT_TYPE
@@ -766,10 +765,7 @@ enum InstanceType {
   // Boundaries for testing the types represented as JSProxy
   FIRST_JS_PROXY_TYPE = JS_FUNCTION_PROXY_TYPE,
   LAST_JS_PROXY_TYPE = JS_PROXY_TYPE,
-  // Boundaries for testing whether the type is a JavaScript object.
-  FIRST_SPEC_OBJECT_TYPE = FIRST_JS_RECEIVER_TYPE,
-  LAST_SPEC_OBJECT_TYPE = LAST_JS_RECEIVER_TYPE,
-  // Boundaries for testing the types for which typeof is "object".
+  //
   FIRST_NONCALLABLE_SPEC_OBJECT_TYPE = JS_PROXY_TYPE,
   LAST_NONCALLABLE_SPEC_OBJECT_TYPE = JS_REGEXP_TYPE,
   // Note that the types for which typeof is "function" are not continuous.