Oilpan: have DOMException be on the heap by default.

Source/modules/cachestorage/Cache.h

 // 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.
 
 #ifndef Cache_h
 #define Cache_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/modules/v8/UnionTypesModules.h"
-#include "core/dom/DOMException.h"
 #include "modules/ModulesExport.h"
 #include "modules/cachestorage/CacheQueryOptions.h"
 #include "modules/fetch/GlobalFetch.h"
 #include "public/platform/WebServiceWorkerCache.h"
 #include "public/platform/WebServiceWorkerCacheError.h"
 #include "wtf/Forward.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
+class DOMException;
 class ExceptionState;
 class Response;
 class Request;
 class ScriptState;
 
 typedef RequestOrUSVString RequestInfo;
 
 class MODULES_EXPORT Cache final : public GarbageCollectedFinalized<Cache>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
     WTF_MAKE_NONCOPYABLE(Cache);
 public:
     static Cache* create(WeakPtr<GlobalFetch::ScopedFetcher>, WebServiceWorkerCache*);
 
     // From Cache.idl:
     ScriptPromise match(ScriptState*, const RequestInfo&, const CacheQueryOptions&, ExceptionState&);
     ScriptPromise matchAll(ScriptState*, const RequestInfo&, const CacheQueryOptions&, ExceptionState&);
     ScriptPromise add(ScriptState*, const RequestInfo&, ExceptionState&);
     ScriptPromise addAll(ScriptState*, const Vector<ScriptValue>&);
     ScriptPromise deleteFunction(ScriptState*, const RequestInfo&, const CacheQueryOptions&, ExceptionState&);
     ScriptPromise put(ScriptState*, const RequestInfo&, Response*, ExceptionState&);
     ScriptPromise keys(ScriptState*, ExceptionState&);
     ScriptPromise keys(ScriptState*, const RequestInfo&, const CacheQueryOptions&, ExceptionState&);
 
-    static PassRefPtrWillBeRawPtr<DOMException> domExceptionForCacheError(WebServiceWorkerCacheError);
+    static DOMException* domExceptionForCacheError(WebServiceWorkerCacheError);
 
     static WebServiceWorkerCache::QueryParams toWebQueryParams(const CacheQueryOptions&);
 
     DEFINE_INLINE_TRACE() { }
 
 private:
     class FetchResolvedForAdd;
     class AsyncPutBatch;
     friend class FetchResolvedForAdd;
     Cache(WeakPtr<GlobalFetch::ScopedFetcher>, WebServiceWorkerCache*);
 
     ScriptPromise matchImpl(ScriptState*, const Request*, const CacheQueryOptions&);
     ScriptPromise matchAllImpl(ScriptState*, const Request*, const CacheQueryOptions&);
     ScriptPromise addAllImpl(ScriptState*, const Vector<Request*>&, ExceptionState&);
     ScriptPromise deleteImpl(ScriptState*, const Request*, const CacheQueryOptions&);
     ScriptPromise putImpl(ScriptState*, Request*, Response*);
     ScriptPromise keysImpl(ScriptState*);
     ScriptPromise keysImpl(ScriptState*, const Request*, const CacheQueryOptions&);
 
     WebServiceWorkerCache* webCache() const;
 
     WeakPtr<GlobalFetch::ScopedFetcher> m_scopedFetcher;
     OwnPtr<WebServiceWorkerCache> m_webCache;
 };
 
 } // namespace blink
 
 #endif // Cache_h