Schedule image resource downloads by decreasing visual impact - Blink Side

Source/platform/network/ResourceRequest.cpp

 /*
  * Copyright (C) 2003, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2009, 2012 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
@@ skipping 21 matching lines @@
 double ResourceRequest::s_defaultTimeoutInterval = INT_MAX;
 
 PassOwnPtr<ResourceRequest> ResourceRequest::adopt(PassOwnPtr<CrossThreadResourceRequestData> data)
 {
     OwnPtr<ResourceRequest> request = adoptPtr(new ResourceRequest());
     request->setURL(data->m_url);
     request->setCachePolicy(data->m_cachePolicy);
     request->setTimeoutInterval(data->m_timeoutInterval);
     request->setFirstPartyForCookies(data->m_firstPartyForCookies);
     request->setHTTPMethod(AtomicString(data->m_httpMethod));
-    request->setPriority(data->m_priority);
+    request->setPriority(data->m_priority, data->m_intraPriorityValue);
 
     request->m_httpHeaderFields.adopt(data->m_httpHeaders.release());
 
     request->setHTTPBody(data->m_httpBody);
     request->setAllowStoredCredentials(data->m_allowStoredCredentials);
     request->setReportUploadProgress(data->m_reportUploadProgress);
     request->setHasUserGesture(data->m_hasUserGesture);
     request->setDownloadToFile(data->m_downloadToFile);
     request->setRequestorID(data->m_requestorID);
     request->setRequestorProcessID(data->m_requestorProcessID);
     request->setAppCacheHostID(data->m_appCacheHostID);
     request->setTargetType(data->m_targetType);
     request->m_referrerPolicy = data->m_referrerPolicy;
     return request.release();
 }
 
 PassOwnPtr<CrossThreadResourceRequestData> ResourceRequest::copyData() const
 {
     OwnPtr<CrossThreadResourceRequestData> data = adoptPtr(new CrossThreadResourceRequestData());
     data->m_url = url().copy();
     data->m_cachePolicy = cachePolicy();
     data->m_timeoutInterval = timeoutInterval();
     data->m_firstPartyForCookies = firstPartyForCookies().copy();
     data->m_httpMethod = httpMethod().string().isolatedCopy();
     data->m_httpHeaders = httpHeaderFields().copyData();
     data->m_priority = priority();
+    data->m_intraPriorityValue = m_intraPriorityValue;
 
     if (m_httpBody)
         data->m_httpBody = m_httpBody->deepCopy();
     data->m_allowStoredCredentials = m_allowStoredCredentials;
     data->m_reportUploadProgress = m_reportUploadProgress;
     data->m_hasUserGesture = m_hasUserGesture;
     data->m_downloadToFile = m_downloadToFile;
     data->m_requestorID = m_requestorID;
     data->m_requestorProcessID = m_requestorProcessID;
     data->m_appCacheHostID = m_appCacheHostID;
@@ skipping 145 matching lines @@
 void ResourceRequest::setAllowStoredCredentials(bool allowCredentials)
 {
     m_allowStoredCredentials = allowCredentials;
 }
 
 ResourceLoadPriority ResourceRequest::priority() const
 {
     return m_priority;
 }
 
-void ResourceRequest::setPriority(ResourceLoadPriority priority)
+void ResourceRequest::setPriority(ResourceLoadPriority priority, int intraPriorityValue)
 {
     m_priority = priority;
+    m_intraPriorityValue = intraPriorityValue;
 }
 
 void ResourceRequest::addHTTPHeaderField(const AtomicString& name, const AtomicString& value)
 {
     HTTPHeaderMap::AddResult result = m_httpHeaderFields.add(name, value);
     if (!result.isNewEntry)
         result.storedValue->value = result.storedValue->value + ',' + value;
 }
 
 void ResourceRequest::addHTTPHeaderFields(const HTTPHeaderMap& headerFields)
@@ skipping 85 matching lines @@
     m_cachePolicy = cachePolicy;
     m_timeoutInterval = s_defaultTimeoutInterval;
     m_httpMethod = "GET";
     m_allowStoredCredentials = true;
     m_reportUploadProgress = false;
     m_reportLoadTiming = false;
     m_reportRawHeaders = false;
     m_hasUserGesture = false;
     m_downloadToFile = false;
     m_priority = ResourceLoadPriorityLow;
+    m_intraPriorityValue = 0;
     m_requestorID = 0;
     m_requestorProcessID = 0;
     m_appCacheHostID = 0;
     m_targetType = TargetIsUnspecified;
     m_referrerPolicy = ReferrerPolicyDefault;
 }
 
 // This is used by the loader to control the number of issued parallel load requests.
 unsigned initializeMaximumHTTPConnectionCountPerHost()
 {
     // The chromium network stack already handles limiting the number of
     // parallel requests per host, so there's no need to do it here.  Therefore,
     // this is set to a high value that should never be hit in practice.
     return 10000;
 }
 
 }