Moving the GL implementation details into a sub folder for client display.

remoting/client/display/gl_canvas.h

Index: remoting/client/display/gl_canvas.h
diff --git a/remoting/client/gl_canvas.h b/remoting/client/display/gl_canvas.h
similarity index 95%
rename from remoting/client/gl_canvas.h
rename to remoting/client/display/gl_canvas.h
index 4df0a4b8d6bcb2dbccc9fc03744975eb48331bc7..f7e9c7addc0264cc0d33ef00bbc626af0f13fc6c 100644
--- a/remoting/client/gl_canvas.h
+++ b/remoting/client/display/gl_canvas.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef REMOTING_CLIENT_OPENGL_GL_CANVAS_H_
-#define REMOTING_CLIENT_OPENGL_GL_CANVAS_H_
+#ifndef REMOTING_CLIENT_DISPLAY_GL_CANVAS_H_
+#define REMOTING_CLIENT_DISPLAY_GL_CANVAS_H_
 
 #include <array>
 
@@ -91,4 +91,4 @@ class GlCanvas {
 
 }  // namespace remoting
 
-#endif  // REMOTING_CLIENT_OPENGL_GL_CANVAS_H_
+#endif  // REMOTING_CLIENT_DISPLAY_GL_CANVAS_H_