Add support for media attribute on link

third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp

 /*
  * Copyright (C) 2010 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 25 matching lines @@
 #include "core/html/HTMLDocument.h"
 #include "core/html/parser/AtomicHTMLToken.h"
 #include "core/html/parser/BackgroundHTMLParser.h"
 #include "core/html/parser/HTMLParserScheduler.h"
 #include "core/html/parser/HTMLParserThread.h"
 #include "core/html/parser/HTMLScriptRunner.h"
 #include "core/html/parser/HTMLTreeBuilder.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorTraceEvents.h"
 #include "core/loader/DocumentLoader.h"
+#include "core/loader/LinkLoader.h"
 #include "core/loader/NavigationScheduler.h"
 #include "platform/SharedBuffer.h"
 #include "platform/ThreadSafeFunctional.h"
 #include "platform/TraceEvent.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebFrameScheduler.h"
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebThread.h"
 #include "wtf/RefCounted.h"
@@ skipping 64 matching lines @@
     , m_weakFactory(this)
     , m_preloader(HTMLResourcePreloader::create(document))
     , m_parsedChunkQueue(ParsedChunkQueue::create())
     , m_shouldUseThreading(syncPolicy == AllowAsynchronousParsing)
     , m_endWasDelayed(false)
     , m_haveBackgroundParser(false)
     , m_tasksWereSuspended(false)
     , m_pumpSessionNestingLevel(0)
     , m_pumpSpeculationsSessionNestingLevel(0)
     , m_isParsingAtLineNumber(false)
+    , m_isLoadedLinkHeaders(false)
 {
     ASSERT(shouldUseThreading() || (m_token && m_tokenizer));
 }
 
 // FIXME: Member variables should be grouped into self-initializing structs to
 // minimize code duplication between these constructors.
 HTMLDocumentParser::HTMLDocumentParser(DocumentFragment* fragment, Element* contextElement, ParserContentPolicy parserContentPolicy)
     : ScriptableDocumentParser(fragment->document(), parserContentPolicy)
     , m_options(&fragment->document())
     , m_token(adoptPtr(new HTMLToken))
@@ skipping 343 matching lines @@
         m_textPosition = it->textPosition();
 
         constructTreeFromCompactHTMLToken(*it);
 
         if (isStopped())
             break;
 
         if (!m_queuedPreloads.isEmpty() && document()->documentElement())
             m_preloader->takeAndPreload(m_queuedPreloads);
 
+        if (!m_isLoadedLinkHeaders) {
+            ViewportDescription oldDescription;
+            String linkHeader = document()->loader()->response().httpHeaderField(HTTPNames::Link);
+            if (!linkHeader.isEmpty()) {
+                ASSERT(chunk);
+                LinkLoader::loadLinkFromHeader(linkHeader, document()->loader()->response().url(),
+                    document(), NetworkHintsInterfaceImpl(), LinkLoader::OnlyLoadResources, &(chunk->viewport));
+                m_isLoadedLinkHeaders = true;
+            }
+        }
+
         if (isWaitingForScripts()) {
             ASSERT(it + 1 == tokens->end()); // The </script> is assumed to be the last token of this bunch.
             runScriptsForPausedTreeBuilder();
             validateSpeculations(chunk.release());
             break;
         }
 
         if (it->type() == HTMLToken::EndOfFile) {
             ASSERT(it + 1 == tokens->end()); // The EOF is assumed to be the last token of this bunch.
             ASSERT(m_speculations.isEmpty()); // There should never be any chunks after the EOF.
@@ skipping 154 matching lines @@
         // adding paranoia if for speculative crash fix for crbug.com/465478
         if (m_preloader) {
             if (!m_preloadScanner) {
                 m_preloadScanner = HTMLPreloadScanner::create(
                     m_options,
                     document()->url(),
                     CachedDocumentParameters::create(document()),
                     MediaValuesCached::MediaValuesCachedData(*document()));
                 m_preloadScanner->appendToEnd(m_input.current());
             }
-            m_preloadScanner->scan(m_preloader.get(), document()->baseElementURL());
+            m_preloadScanner->scan(m_preloader.get(), document()->baseElementURL(), nullptr);
         }
     }
 
     TRACE_EVENT_END1("devtools.timeline", "ParseHTML", "endData", InspectorParseHtmlEvent::endData(m_input.current().currentLine().zeroBasedInt() - 1));
 }
 
 void HTMLDocumentParser::constructTreeFromHTMLToken()
 {
     AtomicHTMLToken atomicToken(token());
 
@@ skipping 66 matching lines @@
         // the main scanner can't deal with insertions.
         if (!m_insertionPreloadScanner) {
             m_insertionPreloadScanner = HTMLPreloadScanner::create(
                 m_options,
                 document()->url(),
                 CachedDocumentParameters::create(document()),
                 MediaValuesCached::MediaValuesCachedData(*document()));
         }
 
         m_insertionPreloadScanner->appendToEnd(source);
-        m_insertionPreloadScanner->scan(m_preloader.get(), document()->baseElementURL());
+        m_insertionPreloadScanner->scan(m_preloader.get(), document()->baseElementURL(), nullptr);
     }
 
     endIfDelayed();
 }
 
 void HTMLDocumentParser::startBackgroundParser()
 {
     ASSERT(!isStopped());
     ASSERT(shouldUseThreading());
     ASSERT(!m_haveBackgroundParser);
@@ skipping 59 matching lines @@
     const SegmentedString source(inputSource);
 
     if (m_preloadScanner) {
         if (m_input.current().isEmpty() && !isWaitingForScripts()) {
             // We have parsed until the end of the current input and so are now moving ahead of the preload scanner.
             // Clear the scanner so we know to scan starting from the current input point if we block again.
             m_preloadScanner.clear();
         } else {
             m_preloadScanner->appendToEnd(source);
             if (isWaitingForScripts())
-                m_preloadScanner->scan(m_preloader.get(), document()->baseElementURL());
+                m_preloadScanner->scan(m_preloader.get(), document()->baseElementURL(), nullptr);
         }
     }
 
     m_input.appendToEnd(source);
 
     if (inPumpSession()) {
         // We've gotten data off the network in a nested write.
         // We don't want to consume any more of the input stream now.  Do
         // not worry.  We'll consume this data in a less-nested write().
         return;
@@ skipping 159 matching lines @@
 
     m_insertionPreloadScanner.clear();
     pumpTokenizerIfPossible();
     endIfDelayed();
 }
 
 void HTMLDocumentParser::appendCurrentInputStreamToPreloadScannerAndScan()
 {
     ASSERT(m_preloadScanner);
     m_preloadScanner->appendToEnd(m_input.current());
-    m_preloadScanner->scan(m_preloader.get(), document()->baseElementURL());
+    m_preloadScanner->scan(m_preloader.get(), document()->baseElementURL(), nullptr);
 }
 
 void HTMLDocumentParser::notifyScriptLoaded(Resource* cachedResource)
 {
     // pumpTokenizer can cause this parser to be detached from the Document,
     // but we need to ensure it isn't deleted yet.
     RefPtrWillBeRawPtr<HTMLDocumentParser> protect(this);
 
     ASSERT(m_scriptRunner);
     ASSERT(!isExecutingScript());
@@ skipping 102 matching lines @@
 void HTMLDocumentParser::setDecoder(PassOwnPtr<TextResourceDecoder> decoder)
 {
     ASSERT(decoder);
     DecodedDataDocumentParser::setDecoder(decoder);
 
     if (m_haveBackgroundParser)
         HTMLParserThread::shared()->postTask(threadSafeBind(&BackgroundHTMLParser::setDecoder, AllowCrossThreadAccess(m_backgroundParser), takeDecoder()));
 }
 
 } // namespace blink