Phase II Step 3: Reload LoFi/placeholder images via new ImageResource

third_party/WebKit/Source/core/fetch/Resource.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) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
@@ skipping 24 matching lines @@
 #include "core/fetch/ResourceLoader.h"
 #include "platform/Histogram.h"
 #include "platform/InstanceCounters.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/SharedBuffer.h"
 #include "platform/WebTaskRunner.h"
 #include "platform/network/HTTPParsers.h"
 #include "platform/tracing/TraceEvent.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/Platform.h"
-#include "public/platform/WebCachePolicy.h"
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebSecurityOrigin.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/MathExtras.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/Vector.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuilder.h"
 #include <algorithm>
 #include <memory>
@@ skipping 347 matching lines @@
   m_data.clear();
   m_encodedSizeMemoryUsage = 0;
 }
 
 void Resource::setDataBufferingPolicy(DataBufferingPolicy dataBufferingPolicy) {
   m_options.dataBufferingPolicy = dataBufferingPolicy;
   clearData();
   setEncodedSize(0);
 }
 
-void Resource::error(const ResourceError& error) {
+void Resource::error(const ResourceError& error,
+                     ResourceFetcher* fetcherForReload) {
   DCHECK(!error.isNull());
   m_error = error;
   m_isRevalidating = false;
 
   if (m_error.isCancellation() || !isPreloaded())
     memoryCache()->remove(this);
 
   if (!errorOccurred())
     setStatus(LoadError);
   DCHECK(errorOccurred());
   clearData();
   m_loader = nullptr;
   checkNotify();
 }
 
-void Resource::finish(double loadFinishTime) {
+void Resource::finish(double loadFinishTime,
+                      ResourceFetcher* fetcherForReload) {
   DCHECK(!m_isRevalidating);
   m_loadFinishTime = loadFinishTime;
   if (!errorOccurred())
     m_status = Cached;
   m_loader = nullptr;
   checkNotify();
 }
 
 AtomicString Resource::httpContentType() const {
   return extractMIMETypeFromMediaType(
@@ skipping 480 matching lines @@
   memoryDump->addSuballocation(
       overheadDump->guid(), String(WTF::Partitions::kAllocatedObjectPoolName));
 }
 
 String Resource::getMemoryDumpName() const {
   return String::format(
       "web_cache/%s_resources/%ld",
       resourceTypeToString(getType(), options().initiatorInfo), m_identifier);
 }
 
-void Resource::setCachePolicyBypassingCache() {
-  m_resourceRequest.setCachePolicy(WebCachePolicy::BypassingCache);
-}
-
-void Resource::setLoFiStateOff() {
-  m_resourceRequest.setLoFiState(WebURLRequest::LoFiOff);
-}
-
-void Resource::clearRangeRequestHeader() {
-  m_resourceRequest.clearHTTPHeaderField("range");
-}
-
 void Resource::revalidationSucceeded(
     const ResourceResponse& validatingResponse) {
   SECURITY_CHECK(m_redirectChain.isEmpty());
   SECURITY_CHECK(equalIgnoringFragmentIdentifier(validatingResponse.url(),
                                                  m_response.url()));
   m_response.setResourceLoadTiming(validatingResponse.resourceLoadTiming());
 
   // RFC2616 10.3.5
   // Update cached headers from the 304 response
   const HTTPHeaderMap& newHeaders = validatingResponse.httpHeaderFields();
@@ skipping 156 matching lines @@
     case Resource::Media:
     case Resource::Manifest:
     case Resource::Mock:
       return false;
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace blink