Refactor the forPreload flag to mean speculative preload.

third_party/WebKit/Source/core/loader/resource/ImageResourceTest.cpp

 /*
  * Copyright (c) 2013, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 165 matching lines @@
   virtual ~ImageResourceTestMockFetchContext() {}
 
   bool allowImage(bool imagesEnabled, const KURL&) const override {
     return true;
   }
   ResourceRequestBlockedReason canRequest(
       Resource::Type,
       const ResourceRequest&,
       const KURL&,
       const ResourceLoaderOptions&,
-      bool forPreload,
+      SecurityViolationReportingPolicy,
       FetchRequest::OriginRestriction) const override {
     return ResourceRequestBlockedReason::None;
   }
   bool shouldLoadNewResource(Resource::Type) const override { return true; }
   RefPtr<WebTaskRunner> loadingTaskRunner() const override { return m_runner; }
 
  private:
   ImageResourceTestMockFetchContext()
       : m_runner(adoptRef(new scheduler::FakeWebTaskRunner)) {}
 
@@ skipping 1072 matching lines @@
   EXPECT_TRUE(observer->imageNotifyFinishedCalled());
   EXPECT_TRUE(imageResource->getContent()->getImage()->isBitmapImage());
   EXPECT_EQ(50, imageResource->getContent()->getImage()->width());
   EXPECT_EQ(50, imageResource->getContent()->getImage()->height());
 
   WTF::setTimeFunctionsForTesting(nullptr);
 }
 
 }  // namespace
 }  // namespace blink