diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/gpu/GrIndexBuffer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/gpu/GrIndexBuffer.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+
+/*
+ * 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 GrIndexBuffer_DEFINED
+#define GrIndexBuffer_DEFINED
+
+#include "GrGeometryBuffer.h"
+
+class GrIndexBuffer : public GrGeometryBuffer {
+public:
+    /**
+     * Retrieves the maximum number of quads that could be rendered
+     * from the index buffer (using kTriangles_GrPrimitiveType).
+     * @return the maximum number of quads using full size of index buffer.
+     */
+    int maxQuads() const {
+        return static_cast<int>(this->sizeInBytes() / (sizeof(uint16_t) * 6));
+    }
+protected:
+    GrIndexBuffer(GrGpu* gpu, bool isWrapped, size_t sizeInBytes, bool dynamic, bool cpuBacked)
+        : INHERITED(gpu, isWrapped, sizeInBytes, dynamic, cpuBacked) {}
+private:
+    typedef GrGeometryBuffer INHERITED;
+};
+
+#endif