diff --git a/include/utils/win/SkIStream.h b/include/utils/win/SkIStream.h
index c6f8a4035d..966aa8e5f3 100644
--- a/include/utils/win/SkIStream.h
+++ b/include/utils/win/SkIStream.h
@@ -121,6 +121,8 @@ public:
                                           , ULONG cb
                                           , ULONG* pcbWritten);
 
+    virtual HRESULT STDMETHODCALLTYPE Commit(DWORD);
+
     virtual HRESULT STDMETHODCALLTYPE Stat(STATSTG* pStatstg
                                          , DWORD grfStatFlag);
 };
diff --git a/src/utils/win/SkIStream.cpp b/src/utils/win/SkIStream.cpp
index a857f40e7d..4d5cd7711e 100644
--- a/src/utils/win/SkIStream.cpp
+++ b/src/utils/win/SkIStream.cpp
@@ -241,6 +241,11 @@ HRESULT STDMETHODCALLTYPE SkWIStream::Write(void const* pv
 }
 
 // IStream Interface
+HRESULT STDMETHODCALLTYPE SkWIStream::Commit(DWORD) {
+    this->fSkWStream->flush();
+    return S_OK;
+}
+
 HRESULT STDMETHODCALLTYPE SkWIStream::Stat(STATSTG* pStatstg
                                          , DWORD grfStatFlag)
 {