This is the first step of the refactoring:
- drawColorRect
- drawTextureMesh
Remaining methods to refactor:
- setupTextureAlpha8
- drawPath
- setupShadow
- drawText
- drawLines
- composeLayerRegion
Change-Id: I0fced6a05b6b6eee10ee7cef0c3fbdaa6cefab20