IndexedDB: Reset prefetch caches on IDBObjectStore.clear()

Test will land on the blink side.

BUG=329971
R=dgrogan@chromium.org

Review URL: https://codereview.chromium.org/116363006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242034 0039d316-1c4b-4281-b951-d872f2087c98
Make net::CertDatabase and PKCS12InitSingleton singletons Leaky.

BUG=218643

Review URL: https://codereview.chromium.org/117303003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242035 0039d316-1c4b-4281-b951-d872f2087c98
Move sticky keys files to their own directory and rename to StickyKeysController.

There will be new files added for the sticky keys UI in the future, and this
refactor improves organization for sticky keys code and is more inline with how
the other accessibility features are organized.

TEST=StickyKeysTests pass

Review URL: https://codereview.chromium.org/118543002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242036 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242036