Roll clang 128641:128780
Roll clang 128641:128780

This brings in a minor bugfix to -Wheader-hygiene

BUG=none
TEST=none
TBR=hans

Review URL: http://codereview.chromium.org/6693051

git-svn-id: http://src.chromium.org/svn/trunk/src@80269 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: a97279ad9b03461501373c12f98fcc8908cde0a3
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