Revert 244693 "Fix omnibox height when less than 64 pixels tall."
Looks like probable candidate for breaking WidgetTest.DesktopAuraTopLevelOwnedPopupResizeTest

> Fix omnibox height when less than 64 pixels tall.
> 
> Ensure there's always a HandleClientSizeChanged call that happens when the bounds change (even if that doesn't cause the actual bounds of the HWND to change), as otherwise the view size will be stale.
> 
> BUG=330123
> 
> Review URL: https://codereview.chromium.org/123793002

TBR=jbauman@chromium.org

Review URL: https://codereview.chromium.org/138313003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244718 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244718