Browser: Materialize

-Material Ui theme
-New icon
-xxhdpi drawables

Patchset: Add new material launcher icon by Sven R.

Change-Id: I291f4bba1e412a8e762666db0684b95105dcf8b0
Browser: Fix resources for incognito mode

we have a functional incognito mode....but forgot to materialize it

Change-Id: Iebcfb224a531d56e50f9c7ba0b71b73bd1b9cf0a
Browser: fix incognito icon

Change-Id: If380211f0994eaad55b157b32bcb171dfd90fbe0
Merge remote-tracking branch 'slim/lp5.0' into lp5.0