diff -r 000000000000 -r 6474c204b198 gfx/angle/src/libGLESv2/renderer/QueryImpl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/angle/src/libGLESv2/renderer/QueryImpl.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,42 @@
+//
+// Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// QueryImpl.h: Defines the abstract rx::QueryImpl class.
+
+#ifndef LIBGLESV2_RENDERER_QUERYIMPL_H_
+#define LIBGLESV2_RENDERER_QUERYIMPL_H_
+
+#include "common/angleutils.h"
+
+namespace rx
+{
+
+class QueryImpl
+{
+  public:
+    explicit QueryImpl(GLenum type) : mType(type), mStatus(GL_FALSE), mResult(0) { }
+    virtual ~QueryImpl() { }
+
+    virtual void begin() = 0;
+    virtual void end() = 0;
+    virtual GLuint getResult() = 0;
+    virtual GLboolean isResultAvailable() = 0;
+
+    GLenum getType() const { return mType; }
+
+  protected:
+    GLuint mResult;
+    GLboolean mStatus;
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(QueryImpl);
+
+    GLenum mType;
+};
+
+}
+
+#endif // LIBGLESV2_RENDERER_QUERYIMPL_H_