Allow assertions to be enabled in Blink Release builds.

Source/core/html/parser/BackgroundHTMLParser.cpp

 /*
  * Copyright (C) 2013 Google, Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 36 matching lines @@
 // These numbers have not been tuned.
 static const size_t outstandingTokenLimit = 10000;
 
 // We limit our chucks to 1000 tokens, to make sure the main
 // thread is never waiting on the parser thread for tokens.
 // This was tuned in https://bugs.webkit.org/show_bug.cgi?id=110408.
 static const size_t pendingTokenLimit = 1000;
 
 using namespace HTMLNames;
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 
 static void checkThatTokensAreSafeToSendToAnotherThread(const CompactHTMLTokenStream* tokens)
 {
     for (size_t i = 0; i < tokens->size(); ++i)
         ASSERT(tokens->at(i).isSafeToSendToAnotherThread());
 }
 
 static void checkThatPreloadsAreSafeToSendToAnotherThread(const PreloadRequestStream& preloads)
 {
     for (size_t i = 0; i < preloads.size(); ++i)
@@ skipping 164 matching lines @@
                 break;
         }
     }
 }
 
 void BackgroundHTMLParser::sendTokensToMainThread()
 {
     if (m_pendingTokens->isEmpty())
         return;
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     checkThatTokensAreSafeToSendToAnotherThread(m_pendingTokens.get());
     checkThatPreloadsAreSafeToSendToAnotherThread(m_pendingPreloads);
     checkThatXSSInfosAreSafeToSendToAnotherThread(m_pendingXSSInfos);
 #endif
 
     OwnPtr<HTMLDocumentParser::ParsedChunk> chunk = adoptPtr(new HTMLDocumentParser::ParsedChunk);
     chunk->preloads.swap(m_pendingPreloads);
     chunk->xssInfos.swap(m_pendingXSSInfos);
     chunk->tokenizerState = m_tokenizer->state();
     chunk->treeBuilderState = m_treeBuilderSimulator.state();
     chunk->inputCheckpoint = m_input.createCheckpoint(m_pendingTokens->size());
     chunk->preloadScannerCheckpoint = m_preloadScanner->createCheckpoint();
     chunk->tokens = m_pendingTokens.release();
     callOnMainThread(bind(&HTMLDocumentParser::didReceiveParsedChunkFromBackgroundParser, m_parser, chunk.release()));
 
     m_pendingTokens = adoptPtr(new CompactHTMLTokenStream);
 }
 
 }