Adding drawable to CRD andorid and iOS gl rendering pipeline.

remoting/client/gl_cursor_feedback.cc

Index: remoting/client/gl_cursor_feedback.cc
diff --git a/remoting/client/gl_cursor_feedback.cc b/remoting/client/gl_cursor_feedback.cc
index c3fcbb49805bcdcd450b2acb02c78e7b644059e9..3bbe936b5f809fbda09136ec25dea25a7e1c40c5 100644
--- a/remoting/client/gl_cursor_feedback.cc
+++ b/remoting/client/gl_cursor_feedback.cc
@@ -43,7 +43,9 @@ float GetExpansionCoefficient(float progress) {
 
 namespace remoting {
 
-GlCursorFeedback::GlCursorFeedback() {}
+GlCursorFeedback::GlCursorFeedback() : weak_factory_(this) {
+  SetZIndex(DrawableZIndex::CURSOR_FEEDBACK);
+}
 
 GlCursorFeedback::~GlCursorFeedback() {}
 
@@ -89,4 +91,8 @@ bool GlCursorFeedback::Draw() {
   return true;
 }
 
+base::WeakPtr<GlDrawable> GlCursorFeedback::GetWeakPtr() {
+  return weak_factory_.GetWeakPtr();
+}
+
 }  // namespace remoting