Reload Lo-Fi images inline instead of reloading the whole page

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 12 matching lines @@
     This class provides all functionality needed for loading images, style sheets and html
     pages from the web. It has a memory cache for these objects.
 */
 
 #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/MHTMLArchive.h"
@@ skipping 1015 matching lines @@
         ResourceLoadPriority resourceLoadPriority = loadPriority(Resource::Image, FetchRequest(resource->resourceRequest(), FetchInitiatorInfo()), resourcePriority.visibility);
         if (resourceLoadPriority == resource->resourceRequest().priority())
             continue;
 
         resource->didChangePriority(resourceLoadPriority, resourcePriority.intraPriorityValue);
         TRACE_EVENT_ASYNC_STEP_INTO1("blink.net", "Resource", resource, "ChangePriority", "priority", resourceLoadPriority);
         context().dispatchDidChangeResourcePriority(resource->identifier(), resourceLoadPriority, resourcePriority.intraPriorityValue);
     }
 }
 
+void ResourceFetcher::reloadLoFiImages()
+{
+    for (const auto& documentResource : m_documentResources) {
+        Resource* resource = documentResource.value.get();
+        if (resource && resource->isImage()) {
+            ImageResource* imageResource = toImageResource(resource);
+            imageResource->reloadIfLoFi(this);
+        }
+    }
+}
+
 #if PRELOAD_DEBUG
 void ResourceFetcher::printPreloadStats()
 {
     if (!m_preloads)
         return;
 
     unsigned scripts = 0;
     unsigned scriptMisses = 0;
     unsigned stylesheets = 0;
     unsigned stylesheetMisses = 0;
@@ skipping 90 matching lines @@
     visitor->trace(m_loaders);
     visitor->trace(m_nonBlockingLoaders);
 #if ENABLE(OILPAN)
     visitor->trace(m_documentResources);
     visitor->trace(m_preloads);
     visitor->trace(m_resourceTimingInfoMap);
 #endif
 }
 
 } // namespace blink