Fix transparency for ImageBuffers we make. This behavior is consistent with what we used to do in GraphicsContext::createOffscreenContext. Review URL: http://codereview.chromium.org/8772
Fix transparency for ImageBuffers we make. This behavior is consistent with
what we used to do in GraphicsContext::createOffscreenContext.
Review URL: http://codereview.chromium.org/8772

git-svn-id: http://src.chromium.org/svn/trunk/src@4291 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: d6da1a0a183012409c1cc0919e16ec4277ed9df7
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