Oilpan: move core/fileapi to oilpan's heap.

Source/modules/mediasource/SourceBuffer.h

Index: Source/modules/mediasource/SourceBuffer.h
diff --git a/Source/modules/mediasource/SourceBuffer.h b/Source/modules/mediasource/SourceBuffer.h
index e6b9c93a7e314ed058bd25da159386ca3a40b504..04b531d5800d462429c52284b49ed4720473972e 100644
--- a/Source/modules/mediasource/SourceBuffer.h
+++ b/Source/modules/mediasource/SourceBuffer.h
@@ -75,8 +75,8 @@ public:
     void setTimestampOffset(double, ExceptionState&);
     void appendBuffer(PassRefPtr<ArrayBuffer> data, ExceptionState&);
     void appendBuffer(PassRefPtr<ArrayBufferView> data, ExceptionState&);
-    void appendStream(PassRefPtr<Stream>, ExceptionState&);
-    void appendStream(PassRefPtr<Stream>, unsigned long long maxSize, ExceptionState&);
+    void appendStream(PassRefPtrWillBeRawPtr<Stream>, ExceptionState&);
+    void appendStream(PassRefPtrWillBeRawPtr<Stream>, unsigned long long maxSize, ExceptionState&);
     void abort(ExceptionState&);
     void remove(double start, double end, ExceptionState&);
     double appendWindowStart() const;
@@ -110,7 +110,7 @@ private:
 
     void removeAsyncPart();
 
-    void appendStreamInternal(PassRefPtr<Stream>, ExceptionState&);
+    void appendStreamInternal(PassRefPtrWillBeRawPtr<Stream>, ExceptionState&);
     void appendStreamAsyncPart();
     void appendStreamDone(bool success);
     void clearAppendStreamState();
@@ -141,7 +141,7 @@ private:
     bool m_streamMaxSizeValid;
     unsigned long long m_streamMaxSize;
     AsyncMethodRunner<SourceBuffer> m_appendStreamAsyncPartRunner;
-    RefPtr<Stream> m_stream;
+    RefPtrWillBeMember<Stream> m_stream;
     OwnPtr<FileReaderLoader> m_loader;
 };