21     fParent = NULL;  in SkLayer()
38     fParent = NULL;  in SkLayer()
93         SkASSERT(m_children[index]->fParent == this);  in getChild()
103     SkASSERT(child->fParent == NULL);  in addChild()
104     child->fParent = this;  in addChild()
111     if (fParent) {  in detachFromParent()
112         int index = fParent->m_children.find(this);  in detachFromParent()
114         fParent->m_children.remove(index);  in detachFromParent()
115         fParent = NULL;  in detachFromParent()
124         SkASSERT(child->fParent == this);  in removeChildren()
125         child->fParent = NULL;  // in case it has more than one owner  in removeChildren()
133     while (root->fParent != NULL) {  in getRootLayer()
134         root = root->fParent;  in getRootLayer()
160     while (layer->fParent != NULL) {  in localToGlobal()
161         layer = layer->fParent;  in localToGlobal()