Omnibox M5 work, part 1: Security changes

* Remove yellow background
* Move lock icon from right side to left side (only on Win)
* Change iconography
* Change scheme colors
* Add label for "Untrusted website"
* Remove tooltip on label

This also simplifies the LocationBarView code on Windows now that LocationBarImageView is unnecessary, and reorders a few things to try and be in more consistent/physical order.

BUG=27570
TEST=Visit various https sites and see that the security icon is on the left, the scheme is colored, and there is no yellow background.
Review URL: http://codereview.chromium.org/1056002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42502 0039d316-1c4b-4281-b951-d872f2087c98
23 files changed