Reload All Images Using Load Image on Lo-Fi Image

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 13 matching lines @@
     pages from the web. It has a memory cache for these objects.
 */
 
 #include "config.h"
 #include "core/fetch/ResourceFetcher.h"
 
 #include "bindings/core/v8/V8DOMActivityLogger.h"
 #include "core/fetch/CrossOriginAccessControl.h"
 #include "core/fetch/FetchContext.h"
 #include "core/fetch/FetchInitiatorTypeNames.h"
+#include "core/fetch/ImageResource.h"
 #include "core/fetch/MemoryCache.h"
 #include "core/fetch/ResourceLoader.h"
 #include "core/fetch/ResourceLoaderSet.h"
 #include "core/fetch/UniqueIdentifier.h"
 #include "platform/Logging.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/TraceEvent.h"
 #include "platform/TracedValue.h"
 #include "platform/mhtml/ArchiveResource.h"
 #include "platform/mhtml/ArchiveResourceCollection.h"
@@ skipping 655 matching lines @@
 bool ResourceFetcher::clientDefersImage(const KURL& url) const
 {
     return !context().allowImage(m_imagesEnabled, url);
 }
 
 bool ResourceFetcher::shouldDeferImageLoad(const KURL& url) const
 {
     return clientDefersImage(url) || !m_autoLoadImages;
 }
 
+void ResourceFetcher::reloadLoFiImages()
+{
+    for (const auto& documentResource : m_documentResources) {
+        Resource* resource = documentResource.value.get();
+        if (resource->isImage() && resource->response().httpHeaderField("chrome-proxy").contains("q=low")) {
+            ImageResource* imageResource = toImageResource(resource);
+            imageResource->mutableResourceRequest().setCachePolicy(ResourceRequestCachePolicy::ReloadBypassingCache);
+            imageResource->clearLoader();
+            imageResource->cacheHandler()->clearCachedMetadata();
+            imageResource->load(this, defaultResourceOptions());
+        }
+    }
+}
+
 void ResourceFetcher::reloadImagesIfNotDeferred()
 {
     for (const auto& documentResource : m_documentResources) {
         Resource* resource = documentResource.value.get();
         if (resource->type() == Resource::Image && resource->stillNeedsLoad() && !clientDefersImage(resource->url()))
             const_cast<Resource*>(resource)->load(this, defaultResourceOptions());
     }
 }
 
 void ResourceFetcher::redirectReceived(Resource* resource, const ResourceResponse& redirectResponse)
@@ skipping 382 matching lines @@
     visitor->trace(m_archiveResourceCollection);
     visitor->trace(m_loaders);
     visitor->trace(m_nonBlockingLoaders);
 #if ENABLE(OILPAN)
     visitor->trace(m_preloads);
     visitor->trace(m_resourceTimingInfoMap);
 #endif
 }
 
 }