Make toolbar look correct with non-standard browser font size settings

Assumption about toolbar height never exceeding 88px is not correct. At
least in Chrome, after setting in advanced configuration font size to
"Large" instead of "Medium", the toolbar's height is 110px and part of it
is transparent. Because it is transparent user can see content behind it
when scrolled down, which makes for a not really good experience.

Change-Id: Ibdc2410cc4ab29bfe774961fc062d172386975d4
Merge "Make toolbar look correct with non-standard browser font size settings"