Adding drawable to CRD andorid and iOS gl rendering pipeline.

remoting/client/gl_cursor.cc

Index: remoting/client/gl_cursor.cc
diff --git a/remoting/client/gl_cursor.cc b/remoting/client/gl_cursor.cc
index 152923ad468d9607f2565ef69faa69e34e11148d..3cac7bbe961e3e73991ac3eeaf370cbc045b9428 100644
--- a/remoting/client/gl_cursor.cc
+++ b/remoting/client/gl_cursor.cc
@@ -18,7 +18,9 @@ namespace {
 const int kDefaultCursorDataSize = 32 * 32 * GlRenderLayer::kBytesPerPixel;
 }  // namespace
 
-GlCursor::GlCursor() {}
+GlCursor::GlCursor() : weak_factory_(this) {
+  SetZIndex(DrawableZIndex::CURSOR);
+}
 
 GlCursor::~GlCursor() {}
 
@@ -80,10 +82,11 @@ void GlCursor::SetCanvas(GlCanvas* canvas) {
   SetCursorPosition(cursor_x_, cursor_y_);
 }
 
-void GlCursor::Draw() {
+bool GlCursor::Draw() {
   if (layer_ && current_cursor_data_ && visible_) {
     layer_->Draw(1.f);
   }
+  return false;
 }
 
 void GlCursor::SetCurrentCursorShape(bool size_changed) {
@@ -98,4 +101,8 @@ void GlCursor::SetCurrentCursorShape(bool size_changed) {
   }
 }
 
+base::WeakPtr<GlDrawable> GlCursor::GetWeakPtr() {
+  return weak_factory_.GetWeakPtr();
+}
+
 }  // namespace remoting