RendererWebColorChooserImpl shouldn't be destroyed by RenderViewObserver::OnDestruct

RenderWebColorChooserImpl is owned by blink::ColorChooserUIController so it should not be destroyed in RenderViewObserver::OnDestruct

BUG=342735

Review URL: https://codereview.chromium.org/181233006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255276 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255276
Make Tab non-abstract by adding an empty implementation of createAutoLoginProcessor().

This is a followup to https://codereview.chromium.org/148523013.

BUG=none

Review URL: https://codereview.chromium.org/179293003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255277 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255277