Move WriteGraphicsLog to OpenGL.

OpenRA.Platforms.Default/Sdl2GraphicsDevice.cs

@@ -82,7 +82,7 @@ namespace OpenRA.Platforms.Default
 
 			if (SDL.SDL_GL_ExtensionSupported("GL_EXT_framebuffer_object") == SDL.SDL_bool.SDL_FALSE)
 			{
-				ErrorHandler.WriteGraphicsLog("OpenRA requires the OpenGL extension GL_EXT_framebuffer_object.\n"
+				OpenGL.WriteGraphicsLog("OpenRA requires the OpenGL extension GL_EXT_framebuffer_object.\n"
 					+ "Please try updating your GPU driver to the latest version provided by the manufacturer.");
 				throw new InvalidProgramException("Missing OpenGL extension GL_EXT_framebuffer_object. See graphics.log for details.");
 			}