Verify the order of RawResourceClient callbacks in DocumentThreadableLoader

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

 /*
  * Copyright (C) 2011 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 242 matching lines @@
 
     for (const auto& header : oldHeaders) {
         AtomicString headerName = header.key;
         if (!shouldIgnoreHeaderForCacheReuse(headerName) && header.value != newHeaders.get(headerName))
             return false;
     }
 
     return true;
 }
 
+RawResourceClientStateChecker::RawResourceClientStateChecker()
+    : m_state(NotAddedAsClient)
+{
+}
+
+RawResourceClientStateChecker::~RawResourceClientStateChecker()
+{
+}
+
+void RawResourceClientStateChecker::willAddClient()
+{
+    SECURITY_CHECK(m_state == NotAddedAsClient);
+    m_state = Started;
+}
+
+void RawResourceClientStateChecker::willRemoveClient()
+{
+    SECURITY_CHECK(m_state != NotAddedAsClient);
+    m_state = NotAddedAsClient;
+}
+
+void RawResourceClientStateChecker::redirectReceived()
+{
+    SECURITY_CHECK(m_state == Started);
+}
+
+void RawResourceClientStateChecker::redirectBlocked()
+{
+    SECURITY_CHECK(m_state == Started);
+    m_state = RedirectBlocked;
+}
+
+void RawResourceClientStateChecker::dataSent()
+{
+    SECURITY_CHECK(m_state == Started);
+}
+
+void RawResourceClientStateChecker::responseReceived()
+{
+    SECURITY_CHECK(m_state == Started);
+    m_state = ResponseReceived;
+}
+
+void RawResourceClientStateChecker::setSerializedCachedMetadata()
+{
+    SECURITY_CHECK(m_state == ResponseReceived);
+    m_state = SetSerializedCachedMetadata;
+}
+
+void RawResourceClientStateChecker::dataReceived()
+{
+    SECURITY_CHECK(m_state == ResponseReceived || m_state == SetSerializedCachedMetadata || m_state == DataReceived);
+    m_state = DataReceived;
+}
+
+void RawResourceClientStateChecker::dataDownloaded()
+{
+    SECURITY_CHECK(m_state == ResponseReceived || m_state == SetSerializedCachedMetadata || m_state == DataDownloaded);
+    m_state = DataDownloaded;
+}
+
+void RawResourceClientStateChecker::notifyFinished(Resource* resource)
+{
+    SECURITY_CHECK(m_state != NotAddedAsClient);
+    SECURITY_CHECK(m_state != NotifyFinished);
+    SECURITY_CHECK(resource->errorOccurred() || (m_state == ResponseReceived || m_state == SetSerializedCachedMetadata || m_state == DataReceived || m_state == DataDownloaded));
+    m_state = NotifyFinished;
+}
+
 } // namespace blink