Simply changing them broke the layout. I couldn't really figure out how to
get the same layout, so ended up using LinearLayouts.
Also removed message_compose_divider, which didn't really add any value
to its parent, horizontalDivider.
Bug 3216086
Change-Id: If29b344e4dc63902d1cc7d5bebdacb9a245ce8d1
The layout is not final, but it's closer to the wireframe.
- All dimensions and colors are not final. I just made them up.
- The "+cc/bcc" and "add attachment" buttons are in the wrong position.
I'll wait for the pixel perfect before addressing them.
Bug 3138037
Change-Id: I72fc7557c28e72df08a3751c3c93acfb35749d68
