Improve drawing of omnibox in HiDPI mode
Improve drawing of omnibox in HiDPI mode

In HiDPI mode the omnibox looks a little blurry. The current drawing code assumes that a line width of 1.0 will draw a 1 pixel wide line.

This change looks up the line_width at run time.

Screenshot of old omnibox:
https://docs.google.com/leaf?id=0B0Odde3V7EhWYzEyYmM2ZjItMzczNC00MjMxLWE5NGItZWY4N2I2MDdiMzg5&hl=en
Screenshot of new omnibox:
https://docs.google.com/leaf?id=0B0Odde3V7EhWMDVhY2U5N2UtMWVhYi00YThjLThlYjctNzE2ODIxZjg3OTc0&hl=en

BUG=None
TEST=Verified that the ominbox looks the same at 72DPI. Ran at 144 DPI and verified that the ominbox no longer looks blurry.

Review URL: http://codereview.chromium.org/6834012

git-svn-id: http://src.chromium.org/svn/trunk/src@81884 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: a32e9b39788b612cce529b568ab2fb8bf2f5f4ca
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser