Adding drawable to CRD andorid and iOS gl rendering pipeline.

remoting/client/display/gl_cursor.cc

Index: remoting/client/display/gl_cursor.cc
diff --git a/remoting/client/display/gl_cursor.cc b/remoting/client/display/gl_cursor.cc
index 4a4c55a1824ef50cd2cb5fd971ef1b4ba6271a49..dae30effbd1a971a958476718f86b757790c4e7d 100644
--- a/remoting/client/display/gl_cursor.cc
+++ b/remoting/client/display/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() {}
 
@@ -68,22 +70,24 @@ void GlCursor::SetCursorVisible(bool visible) {
   visible_ = visible;
 }
 
-void GlCursor::SetCanvas(GlCanvas* canvas) {
+void GlCursor::SetCanvas(base::WeakPtr<Canvas> canvas) {
   if (!canvas) {
     layer_.reset();
     return;
   }
-  layer_.reset(new GlRenderLayer(kGlCursorTextureId, canvas));
+  layer_.reset(new GlRenderLayer(kGlCursorTextureId, canvas->GetWeakPtr()));

[Yuwei, 2017/01/10 22:09:53]

Just pass canvas. No need to call GetWeakPtr()

   if (current_cursor_data_) {
     SetCurrentCursorShape(true);
   }
   SetCursorPosition(cursor_x_, cursor_y_);
 }
 
-void GlCursor::Draw() {
+bool GlCursor::Draw() {
+  DCHECK(thread_checker_.CalledOnValidThread());
   if (layer_ && current_cursor_data_ && visible_) {
     layer_->Draw(1.f);
   }
+  return false;
 }
 
 void GlCursor::SetCurrentCursorShape(bool size_changed) {
@@ -98,4 +102,9 @@ void GlCursor::SetCurrentCursorShape(bool size_changed) {
   }
 }
 
+base::WeakPtr<Drawable> GlCursor::GetWeakPtr() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  return weak_factory_.GetWeakPtr();
+}
+
 }  // namespace remoting