remove SignatureInfo class

src/objects-debug.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/heap/objects-visiting.h"
 #include "src/jsregexp.h"
@@ skipping 939 matching lines @@
 
 
 void ObjectTemplateInfo::ObjectTemplateInfoVerify() {
   CHECK(IsObjectTemplateInfo());
   TemplateInfoVerify();
   VerifyPointer(constructor());
   VerifyPointer(internal_field_count());
 }
 
 
-void SignatureInfo::SignatureInfoVerify() {
-  CHECK(IsSignatureInfo());
-  VerifyPointer(receiver());
-  VerifyPointer(args());
-}
-
-
 void TypeSwitchInfo::TypeSwitchInfoVerify() {
   CHECK(IsTypeSwitchInfo());
   VerifyPointer(types());
 }
 
 
 void AllocationSite::AllocationSiteVerify() {
   CHECK(IsAllocationSite());
 }
 
@@ skipping 281 matching lines @@
     while (map != heap->roots_array_start()[i++]) {
       CHECK_LT(i, Heap::kStrongRootListLength);
     }
   }
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal