Skia: support 1bpp bitmap fonts.
Skia: support 1bpp bitmap fonts.

Our Kanji fonts have 1bpp bitmaps rather than outlines and, currently,
we assume that all bitmaps from Freetype are 8-bit grayscale. This
leads to some glyphs being 8x too thin.

http://codereview.chromium.org/63017/show


git-svn-id: http://src.chromium.org/svn/trunk/src@13209 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 04f0957620af56cc992747b4412bdffca49e0742
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