diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/pdf/SkPDFFormXObject.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/pdf/SkPDFFormXObject.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,61 @@
+
+/*
+ * Copyright 2010 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkPDFFormXObject_DEFINED
+#define SkPDFFormXObject_DEFINED
+
+#include "SkPDFStream.h"
+#include "SkPDFTypes.h"
+#include "SkRect.h"
+#include "SkRefCnt.h"
+#include "SkPDFResourceDict.h"
+#include "SkString.h"
+
+class SkMatrix;
+class SkPDFDevice;
+class SkPDFCatalog;
+
+/** \class SkPDFFormXObject
+
+    A form XObject; a self contained description of graphics objects.  A form
+    XObject is basically a page object with slightly different syntax, that
+    can be drawn onto a page.
+*/
+
+// The caller could keep track of the form XObjects it creates and
+// canonicalize them, but the Skia API doesn't provide enough context to
+// automatically do it (trivially).
+class SkPDFFormXObject : public SkPDFStream {
+public:
+    /** Create a PDF form XObject. Entries for the dictionary entries are
+     *  automatically added.
+     *  @param device      The set of graphical elements on this form.
+     */
+    explicit SkPDFFormXObject(SkPDFDevice* device);
+    /**
+     * Create a PDF form XObject from a raw content stream and associated
+     * resources.
+     */
+    explicit SkPDFFormXObject(SkStream* content,
+                              SkRect bbox,
+                              SkPDFResourceDict* resourceDict);
+    virtual ~SkPDFFormXObject();
+
+    // The SkPDFObject interface.
+    virtual void getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
+                              SkTSet<SkPDFObject*>* newResourceObjects);
+
+private:
+    void init(const char* colorSpace,
+              SkPDFDict* resourceDict, SkPDFArray* bbox);
+
+    SkTSet<SkPDFObject*> fResources;
+};
+
+#endif