Prevent bookmarks bar toggling from decreasing window height to 0.

Toggling the bookmarks bar changes the height of the browser window
when viewing a regular web page but does not change its height when
viewing a NTP. As a result, it is possible for the browser window to
creep taller or shorter with the right sequence of steps. When the
browser window gets shorter, it's possible to decrease its height to
0.

This change does not address the difference in behavior between NTPs
and regular web pages with the bookmarks bar, but it prevents the
browser window from programmatically dropping below its min height.

Added a unit test, and also had to adjust a unit test that created browser
windows with a height < 200 (min height for a browser window is 272).

BUG=230400
TEST=Create a browser window, confirm that View -> Always Show Bookmarks
Bar is checked, navigate to www.google.com, resize the window to its
minimum height, choose View -> Always Show Bookmarks Bar - the browser
window's bookmarks bar should disappear, but the browser window's height
should not change.

Review URL: https://codereview.chromium.org/1052123006

Cr-Commit-Position: refs/heads/master@{#325267}

0 files changed, 0 insertions, 0 deletions