the Mesh object can be part of each Layer (at least currently). also reworked the Mesh code a bit to make it easier to access the vertex data. Change-Id: I0490851ba898f0aa2e55b62958dcd8bdb535e98b
Bug: 8679321 Change-Id: I2b152d01fb4e2de2ea9fe87f1ddbd6826d7520d7