Files.app: Stop to use localStorage to store the banner dissmissing flag.

Previously we switched from the localStorage to the chrome.storage.local, but
one flag is still stored into localStorage. We can no longer use the local
storage from the pack app. This CL completely removes usage of the localStorage.

BUG=336143
TEST=manually

Review URL: https://codereview.chromium.org/135183007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246000 0039d316-1c4b-4281-b951-d872f2087c98
Flag TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 as using ECDHE_ECDSA key exchange

BUG=336328
TEST=Navigate to a site that negotiates
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 (eg: https://www.gmail.com )
and, if TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 is negotiated, confirm
that the key exchange algorithm is listed as ECDHE_ECDSA with the
encryption/authentication alg as CHACHA20_POLY1305

Review URL: https://codereview.chromium.org/139743003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246001 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246001