Revert of Oilpan: enable appcache + move DocumentLoader to the heap.

Source/core/loader/FrameFetchContextTest.cpp

Index: Source/core/loader/FrameFetchContextTest.cpp
diff --git a/Source/core/loader/FrameFetchContextTest.cpp b/Source/core/loader/FrameFetchContextTest.cpp
index 9613a23ac79d43e8be5ef8b1db43a34b07a9aa62..d18df401db0925b019fbfc8cba363ac263c5025c 100644
--- a/Source/core/loader/FrameFetchContextTest.cpp
+++ b/Source/core/loader/FrameFetchContextTest.cpp
@@ -63,12 +63,6 @@
         FrameFetchContext::provideDocumentToContext(*fetchContext, document.get());
     }
 
-    virtual void TearDown()
-    {
-        documentLoader->detachFromFrame();
-        documentLoader.clear();
-    }
-
     void expectUpgrade(const char* input, const char* expected)
     {
         expectUpgrade(input, WebURLRequest::RequestContextScript, WebURLRequest::FrameTypeNone, expected);
@@ -114,7 +108,7 @@
     OwnPtr<DummyPageHolder> dummyPageHolder;
     // We don't use the DocumentLoader directly in any tests, but need to keep it around as long
     // as the ResourceFetcher and Document live due to indirect usage.
-    RefPtrWillBePersistent<DocumentLoader> documentLoader;
+    RefPtr<DocumentLoader> documentLoader;
     RefPtrWillBePersistent<Document> document;
     FetchContext* fetchContext;
 };
@@ -236,12 +230,6 @@
         FrameFetchContext::provideDocumentToContext(*fetchContext, document.get());
     }
 
-    virtual void TearDown()
-    {
-        documentLoader->detachFromFrame();
-        documentLoader.clear();
-    }
-
     void expectHeader(const char* input, const char* headerName, bool isPresent, const char* headerValue, float width = 0)
     {
         KURL inputURL(ParsedURLString, input);
@@ -261,7 +249,7 @@
     OwnPtr<DummyPageHolder> dummyPageHolder;
     // We don't use the DocumentLoader directly in any tests, but need to keep it around as long
     // as the ResourceFetcher and Document live due to indirect usage.
-    RefPtrWillBePersistent<DocumentLoader> documentLoader;
+    RefPtr<DocumentLoader> documentLoader;
     RefPtrWillBePersistent<Document> document;
     FetchContext* fetchContext;
 };
@@ -321,3 +309,4 @@
 }
 
 } // namespace
+