cros: Initialize prefs::kGoogleServicesUsername with canonicalized email

BUG=323226

Review URL: https://codereview.chromium.org/96523005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237969 0039d316-1c4b-4281-b951-d872f2087c98
[SyncFS] Ban slashes in title

 * Do not activate a file that have slash in its title.

BUG=240165

Review URL: https://codereview.chromium.org/96673003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237970 0039d316-1c4b-4281-b951-d872f2087c98
Remove -Wno-deprecated-warnings from cflags for clang

third-party libraries that use auto_ptr or other deprecated APIs
should either define this locally or be updated.

BUG=324299
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/96833003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237971 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237970
Support win aura screen reader workarounds on Win 8 too.

This also fixes a crash on all Win platforms due to
incorrect HWND ownership.

BUG=227026

Review URL: https://codereview.chromium.org/72863003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237972 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237972