[Password Manager] Persist new PasswordForm fields in Gnome.

BUG=

Review URL: https://codereview.chromium.org/179103002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254292 0039d316-1c4b-4281-b951-d872f2087c98
[OriginChip, OSX] Add unit test for focus behavior

As discussed on the original CL[1], adding a test case for the focus &
click behavior on ButtonDecorations.

[1] https://codereview.chromium.org/163913011/

BUG=none

Review URL: https://codereview.chromium.org/179363016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254293 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254293
Move chrome/browser/value_store to extensions/value_store

The extensions storage API implementation is going to be moved to src/extensions so that app_shell can use it. It uses value_store extensively, so that has to move out of src/chrome first.

BUG=348058
TEST=unit_tests
TBR=zea@chromium.org for renaming a header used in chrome/browser/sync
TBR=mpcomplete@chromium.org for releasing him from ownership of this module :-)

Review URL: https://codereview.chromium.org/184863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254294 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254294