1. The last row of print options was not visible on a phone.
2. The preview page size on a phone in landscape unusably small.
3. Updated the Save to PDF icon.
bug:16966145
Change-Id: I25ce1572758c62f34344683af2452fb045bb857e
This change adds the pring preview part of the new print UX. The
UI has two parts, the top section is the print options and the
bottom section print preview with a list of pages. The user can
interact only with one of them. When print options are expanded
they cover the preview content and a scrim is laid out on top of
the preview. Tapping the scrim collapses the print options. When
the user types in page ranges and closes the options to look at
the preview, the latter is updated to show only these pages. In
the list of pages the user can further prune pages by deselecting
them.
Change-Id: I0b23d2c598afe2a34400ccfa43e4e935af83c72f
