Show the full extension information in the extension controlled setting bubble for Default search engines.

Also fix the glitch where the bubble popping up from the Default Search Engine list (DSE) appearing behind a selected row in the Other Search Engine list (OSE). That is fixed by making the OSE list have a lower z-index within the stacking context than the DSE.

BUG=314507
R=dbeam@chromium.org

Review URL: https://codereview.chromium.org/181293005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255931 0039d316-1c4b-4281-b951-d872f2087c98
Move ContentAutofillDriver to the PasswordManager component.

As ContentAutofillDriver is the //content-based driver implementation for the
PasswordManager component, it belongs within the component itself rather than
in the //chrome embedder of the component.

BUG=348515
R=dubroy@chromium.org
TBR=darin

Review URL: https://codereview.chromium.org/192633002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255932 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255932