Revert "Revert 217570 "Undo band-aid which was ignoring wrong SessionSto...""

This reverts r240394.

Restoring the band-aid because of crbug.com/325378 shouldn't have been done,
as crbug.com/325378 will result in content from separate storage partitions
getting mixed, instead of just killing renderers under some unclear circumstances
(which the bandaid was protecting from).

BUG=
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/118253002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241564 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241564
[IME API] Adds input.ime.hideInputView API.

BUG=316524
TEST=Locally verified on sandbox.

Review URL: https://codereview.chromium.org/108723004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241566 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241566