Make internals.isPreloaded() to remain the same before/after clearPreloads()

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index d1c86963cca7d3e5375da5107164133beaa3df5e..9b30ec480db420f2f882f9ce5765343baac5277b 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -250,6 +250,7 @@ Internals::Internals(ScriptState* scriptState)
     : ContextLifecycleObserver(scriptState->getExecutionContext())
     , m_runtimeFlags(InternalRuntimeFlags::create())
 {
+    contextDocument()->fetcher()->enableIsPreloadedForTest();
 }
 
 Document* Internals::contextDocument() const
@@ -396,7 +397,7 @@ bool Internals::isPreloadedBy(const String& url, Document* document)
 {
     if (!document)
         return false;
-    return document->fetcher()->isPreloaded(document->completeURL(url));
+    return document->fetcher()->isPreloadedForTest(document->completeURL(url));
 }
 
 bool Internals::isLoadingFromMemoryCache(const String& url)