Oilpan: Replace checkHeader() with ASSERT(checkHeader())

Source/platform/heap/GCInfo.cpp

 // Copyright 2015 The Chromium 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 "config.h"
 #include "platform/heap/GCInfo.h"
 
 #include "platform/heap/Handle.h"
 #include "platform/heap/Heap.h"
 
@@ skipping 53 matching lines @@
 
 void GCInfoTable::shutdown()
 {
     free(s_gcInfoTable);
     s_gcInfoTable = nullptr;
 }
 
 #if ENABLE(ASSERT)
 void assertObjectHasGCInfo(const void* payload, size_t gcInfoIndex)
 {
-    HeapObjectHeader::fromPayload(payload)->checkHeader();
+    ASSERT(HeapObjectHeader::fromPayload(payload)->checkHeader());
 #if !defined(COMPONENT_BUILD)
     // On component builds we cannot compare the gcInfos as they are statically
     // defined in each of the components and hence will not match.
     BasePage* page = pageFromObject(payload);
     ASSERT(!page->orphaned());
     ASSERT(HeapObjectHeader::fromPayload(payload)->gcInfoIndex() == gcInfoIndex);
 #endif
 }
 #endif
 
 } // namespace blink