Migrate error messages, part 12.

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 475 matching lines @@
   }
   if (cache_stamp()->IsSmi()) {
     CHECK(Smi::cast(cache_stamp())->value() <=
           Smi::cast(GetIsolate()->date_cache()->stamp())->value());
   }
 }
 
 
 void JSMessageObject::JSMessageObjectVerify() {
   CHECK(IsJSMessageObject());
-  CHECK(type()->IsString());
-  CHECK(arguments()->IsJSArray());
   VerifyObjectField(kStartPositionOffset);
   VerifyObjectField(kEndPositionOffset);
   VerifyObjectField(kArgumentsOffset);
   VerifyObjectField(kScriptOffset);
   VerifyObjectField(kStackFramesOffset);
 }
 
 
 void String::StringVerify() {
   CHECK(IsString());
@@ skipping 774 matching lines @@
                          ? it.rinfo()->target_cell()
                          : it.rinfo()->target_object();
     CHECK(!CanLeak(target, heap, skip_weak_cell));
   }
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal