Transform parents of modal windows with modal window. Hide non overview windows.

BUG=304289
TEST=WindowSelectorTest.NonActivatableWindowsHidden,
  WindowSelectorTest.ModalChild,
  WindowSelectorTest.ClickModalWindowParent
TEST=Open a browser, press Ctrl+O to open a modal window. Enter overview.
  Browser should be transformed with modal file open window. Clicking on browser
  should activate file open window.

Review URL: https://codereview.chromium.org/26487003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227555 0039d316-1c4b-4281-b951-d872f2087c98
[NaCl Docs] Build devsite docs without a subfolder by default.

The subfolder can still be specified by adding
 -Ddevsite_foldername=foo

R=eliben@chromium.org

Review URL: https://codereview.chromium.org/26551002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227556 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227555
SVN changes up to revision 227556