diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/pdf/SkPDFStream.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/pdf/SkPDFStream.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,100 @@
+
+/*
+ * Copyright 2010 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkPDFStream_DEFINED
+#define SkPDFStream_DEFINED
+
+#include "SkPDFTypes.h"
+#include "SkRefCnt.h"
+#include "SkStream.h"
+#include "SkTemplates.h"
+
+class SkPDFCatalog;
+
+/** \class SkPDFStream
+
+    A stream object in a PDF.  Note, all streams must be indirect objects (via
+    SkObjRef).
+    TODO(vandebo): SkStream should be replaced by SkStreamRewindable when that
+    is feasible.
+*/
+class SkPDFStream : public SkPDFDict {
+    SK_DECLARE_INST_COUNT(SkPDFStream)
+public:
+    /** Create a PDF stream. A Length entry is automatically added to the
+     *  stream dictionary. The stream may be retained (stream->ref() may be
+     *  called) so its contents must not be changed after calling this.
+     *  @param data  The data part of the stream.
+     */
+    explicit SkPDFStream(SkData* data);
+    /** Deprecated constructor. */
+    explicit SkPDFStream(SkStream* stream);
+    /** Create a PDF stream with the same content and dictionary entries
+     *  as the passed one.
+     */
+    explicit SkPDFStream(const SkPDFStream& pdfStream);
+    virtual ~SkPDFStream();
+
+    // The SkPDFObject interface.
+    virtual void emitObject(SkWStream* stream, SkPDFCatalog* catalog,
+                            bool indirect);
+    virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect);
+
+protected:
+    enum State {
+        kUnused_State,         //!< The stream hasn't been requested yet.
+        kNoCompression_State,  //!< The stream's been requested in an
+                               //   uncompressed form.
+        kCompressed_State,     //!< The stream's already been compressed.
+    };
+
+    /* Create a PDF stream with no data.  The setData method must be called to
+     * set the data.
+     */
+    SkPDFStream();
+
+    // Populate the stream dictionary.  This method returns false if
+    // fSubstitute should be used.
+    virtual bool populate(SkPDFCatalog* catalog);
+
+    void setSubstitute(SkPDFStream* stream) {
+        fSubstitute.reset(stream);
+    }
+
+    SkPDFStream* getSubstitute() {
+        return fSubstitute.get();
+    }
+
+    void setData(SkData* data);
+    void setData(SkStream* stream);
+
+    SkStream* getData() {
+        return fData.get();
+    }
+
+    void setState(State state) {
+        fState = state;
+    }
+
+    State getState() {
+        return fState;
+    }
+
+private:
+    // Indicates what form (or if) the stream has been requested.
+    State fState;
+
+    // TODO(vandebo): Use SkData (after removing deprecated constructor).
+    SkAutoTUnref<SkStream> fData;
+    SkAutoTUnref<SkPDFStream> fSubstitute;
+
+    typedef SkPDFDict INHERITED;
+};
+
+#endif