Add the link_dependency attribute to libc++ and libc++abi so that only binary targets depend on them.

BUG=346703
TBR=earthdok@chromium.org

Review URL: https://codereview.chromium.org/187623002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255013 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255013
Disable password manager reauthentication below Windows 7.

This is because of an interaction between LogonUser() call and sandbox token minting.

BUG=345916

Review URL: https://codereview.chromium.org/180783014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255014 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255014