Add Commit to SkWIStream.
http://codereview.appspot.com/4809069/



git-svn-id: http://skia.googlecode.com/svn/trunk@2017 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/utils/win/SkIStream.h b/include/utils/win/SkIStream.h
index c6f8a40..966aa8e 100644
--- a/include/utils/win/SkIStream.h
+++ b/include/utils/win/SkIStream.h
@@ -121,6 +121,8 @@
                                           , ULONG cb
                                           , ULONG* pcbWritten);
 
+    virtual HRESULT STDMETHODCALLTYPE Commit(DWORD);
+
     virtual HRESULT STDMETHODCALLTYPE Stat(STATSTG* pStatstg
                                          , DWORD grfStatFlag);
 };