Windows-specific implementation of Networking Private API.

Previously reviewed as https://codereview.chromium.org/27722003, but
moves WiFiService Windows implementation to components/wifi.

Based on infrastructure in https://codereview.chromium.org/54323003/

BUG=267667

Review URL: https://codereview.chromium.org/68503019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236816 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236816
[SiteChip] Resize the too-large top images in the initial image set.

R=oshima@chromium.org
BUG=315944

Review URL: https://codereview.chromium.org/82573004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236817 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236817