Add support for EGL_KHR_gl_colorspace

Change-Id: I684d0b8556cd6c84ee4b4d67e1bb95c3b96fccfb
diff --git a/opengl/libs/EGL/egl_display.h b/opengl/libs/EGL/egl_display.h
index 754085c..87f27f8 100644
--- a/opengl/libs/EGL/egl_display.h
+++ b/opengl/libs/EGL/egl_display.h
@@ -99,6 +99,8 @@
     char const * getClientApiString() const { return mClientApiString.string(); }
     char const * getExtensionString() const { return mExtensionString.string(); }
 
+    bool haveExtension(const char* name, size_t nameLen = 0) const;
+
     inline uint32_t getRefsCount() const { return refs; }
 
     struct strings_t {