Add link preload as=document support

third_party/WebKit/Source/core/fetch/ResourceFetcher.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 1006 matching lines @@
 
 void ResourceFetcher::moveResourceLoaderToNonBlocking(ResourceLoader* loader)
 {
     m_nonBlockingLoaders.add(loader);
     m_loaders.remove(loader);
 }
 
 bool ResourceFetcher::startLoad(Resource* resource)
 {
     DCHECK(resource && resource->stillNeedsLoad());
-    if (!context().shouldLoadNewResource(resource->getType())) {
+    if (!context().shouldLoadNewResource(resource->getType(), resource->resourceRequest().frameType())) {
         memoryCache()->remove(resource);
         return false;
     }
 
     ResourceRequest request(resource->resourceRequest());
     willSendRequest(resource->identifier(), request, ResourceResponse(), resource->options());
 
     ResourceLoader* loader = ResourceLoader::create(this, resource);
     if (resource->shouldBlockLoadEvent())
         m_loaders.add(loader);
@@ skipping 135 matching lines @@
     unsigned fonts = 0;
     unsigned fontMisses = 0;
     unsigned medias = 0;
     unsigned mediaMisses = 0;
     unsigned textTracks = 0;
     unsigned textTrackMisses = 0;
     unsigned imports = 0;
     unsigned importMisses = 0;
     unsigned raws = 0;
     unsigned rawMisses = 0;
+    unsigned mains = 0;
+    unsigned mainMisses = 0;
     for (auto resource : *m_preloads) {
         int missCount = resource->getPreloadResult() == Resource::PreloadNotReferenced ? 1 : 0;
         switch (resource->getType()) {
         case Resource::Image:
             images++;
             imageMisses += missCount;
             break;
         case Resource::Script:
             scripts++;
             scriptMisses += missCount;
@@ skipping 15 matching lines @@
             textTrackMisses += missCount;
             break;
         case Resource::ImportResource:
             imports++;
             importMisses += missCount;
             break;
         case Resource::Raw:
             raws++;
             rawMisses += missCount;
             break;
+        case Resource::MainResource:
+            mains++;
+            mainMisses += missCount;
+            break;
         default:
             ASSERT_NOT_REACHED();
         }
     }
     // TODO(csharrison): These can falsely attribute link rel="preload" requests
     // as misses if they are referenced after parsing completes. Migrate this
     // logic to the memory cache / individual resources to prevent this.
     DEFINE_STATIC_LOCAL(CustomCountHistogram, imagePreloads, ("PreloadScanner.Counts2.Image", 0, 100, 25));
     DEFINE_STATIC_LOCAL(CustomCountHistogram, imagePreloadMisses, ("PreloadScanner.Counts2.Miss.Image", 0, 100, 25));
     DEFINE_STATIC_LOCAL(CustomCountHistogram, scriptPreloads, ("PreloadScanner.Counts2.Script", 0, 100, 25));
@@ skipping 95 matching lines @@
     visitor->trace(m_context);
     visitor->trace(m_archive);
     visitor->trace(m_loaders);
     visitor->trace(m_nonBlockingLoaders);
     visitor->trace(m_documentResources);
     visitor->trace(m_preloads);
     visitor->trace(m_resourceTimingInfoMap);
 }
 
 } // namespace blink