Histogram display refresh rate on windows

This reports every time wequery the display mode, which is quite frequent,
but since the display rate can change over time this will have the effect of
weighting each refresh rate by overall usage instead of by pure user count.

BUG=262437 (this doesn't fix the bug, but makes it easier to analyze the effects)
R=isherman@chromium.org, jbauman@chromium.org, kbr@chromium.org

Review URL: https://codereview.chromium.org/25705005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226811 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226811
Refactor PermissionSet to move chrome-specific host checks to ChromeExtensionsClient.

Combine GetChromeSchemeHosts and GetDistinctHostsForDisplay logic for special permission messages for chrome://favicon into GetSpecialHostPermissionWarnings.

BUG=298586

Review URL: https://codereview.chromium.org/25713006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226812 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226812