[CRD iOS] Hook the touch input feedback

remoting/client/renderer_facade.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef REMOTING_CLIENT_RENDERER_FACADE_H_
+#define REMOTING_CLIENT_RENDERER_FACADE_H_
+
+namespace remoting {
+
+class ViewMatrix;
+
+// An interface for controlling the renderer.
+// TODO(yuweih): This should be removed once we have moved Drawables out of
+// GlRenderer.
+class RendererFacade {
+ public:
+  virtual ~RendererFacade() {}
+
+  // These functions will eventually call the corresponding functions in
+  // GlRenderer. Please reference to GlRenderer for more details.
+  virtual void SetTransformation(const ViewMatrix& transformation) = 0;
+  virtual void SetCursorPosition(float x, float y) = 0;
+  virtual void SetCursorVisibility(bool visible) = 0;
+  virtual void StartInputFeedback(float x, float y, float diameter) = 0;
+};
+
+}  // namespace remoting
+#endif  // REMOTING_CLIENT_RENDERER_FACADE_H_