diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/gpu/gl/GrGLStencilBuffer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/gpu/gl/GrGLStencilBuffer.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef GrGLStencilBuffer_DEFINED
+#define GrGLStencilBuffer_DEFINED
+
+#include "gl/GrGLInterface.h"
+#include "GrStencilBuffer.h"
+
+class GrGLStencilBuffer : public GrStencilBuffer {
+public:
+    static const GrGLenum kUnknownInternalFormat = ~0U;
+    static const GrGLuint kUnknownBitCount = ~0U;
+    struct Format {
+        GrGLenum  fInternalFormat;
+        GrGLuint  fStencilBits;
+        GrGLuint  fTotalBits;
+        bool      fPacked;
+    };
+
+    GrGLStencilBuffer(GrGpu* gpu,
+                      bool isWrapped,
+                      GrGLint rbid,
+                      int width, int height,
+                      int sampleCnt,
+                      const Format& format)
+        : GrStencilBuffer(gpu, isWrapped, width, height, format.fStencilBits, sampleCnt)
+        , fFormat(format)
+        , fRenderbufferID(rbid) {
+    }
+
+    virtual ~GrGLStencilBuffer();
+
+    virtual size_t sizeInBytes() const SK_OVERRIDE;
+
+    GrGLuint renderbufferID() const {
+        return fRenderbufferID;
+    }
+
+    const Format& format() const { return fFormat; }
+
+protected:
+    // overrides of GrResource
+    virtual void onRelease() SK_OVERRIDE;
+    virtual void onAbandon() SK_OVERRIDE;
+
+private:
+    Format fFormat;
+    // may be zero for external SBs associated with external RTs
+    // (we don't require the client to give us the id, just tell
+    // us how many bits of stencil there are).
+    GrGLuint fRenderbufferID;
+
+    typedef GrStencilBuffer INHERITED;
+};
+
+#endif