Oilpan: have DOMException be on the heap by default.

Source/modules/fetch/ResponseTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/fetch/Response.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/Document.h"
@@ skipping 48 matching lines @@
     ~BlobHandleCreatorClient() override { }
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         visitor->trace(m_exception);
         BodyStreamBuffer::BlobHandleCreatorClient::trace(visitor);
     }
     void didCreateBlobHandle(PassRefPtr<BlobDataHandle> blobHandle) override
     {
         m_blobHandle = blobHandle;
     }
-    void didFail(PassRefPtrWillBeRawPtr<DOMException> exception) override
+    void didFail(DOMException* exception) override
     {
         m_exception = exception;
     }
     PassRefPtr<BlobDataHandle> blobHandle()
     {
         return m_blobHandle;
     }
-    PassRefPtrWillBeRawPtr<DOMException> exception()
+    DOMException* exception()
     {
         return m_exception;
     }
 
 private:
     RefPtr<BlobDataHandle> m_blobHandle;
-    RefPtrWillBeMember<DOMException> m_exception;
+    Member<DOMException> m_exception;
 };
 
 
 class ServiceWorkerResponseTest : public ::testing::Test {
 public:
     ServiceWorkerResponseTest()
         : m_page(DummyPageHolder::create(IntSize(1, 1))) { }
 
     ScriptState* scriptState() { return ScriptState::forMainWorld(m_page->document().frame()); }
     ExecutionContext* executionContext() { return scriptState()->executionContext(); }
@@ skipping 298 matching lines @@
 
     EXPECT_EQ(0, canceller->counter());
     response->bufferForTest()->cancel();
     EXPECT_EQ(0, canceller->counter());
     clonedResponse->bufferForTest()->cancel();
     EXPECT_EQ(1, canceller->counter());
 }
 
 } // namespace
 } // namespace blink