Add any/all support for variants

Like `format.any`, you can do the same with variants.

It works for both inline:

    respond_to do |format|
      format.html.any   { render text: "any"   }
      format.html.phone { render text: "phone" }
    end

and block syntax:

    respond_to do |format|
      format.html do |variant|
        variant.any(:tablet, :phablet){ render text: "any" }
        variant.phone { render text: "phone" }
      end
    end

1 files changed, 1 insertions, 0 deletions

diff --git a/actionpack/test/fixtures/respond_to/variant_any_implicit_render.html+phablet.erb b/actionpack/test/fixtures/respond_to/variant_any_implicit_render.html+phablet.erb
new file mode 100644
index 0000000000..e905d051bf
--- /dev/null
+++ b/actionpack/test/fixtures/respond_to/variant_any_implicit_render.html+phablet.erb
@@ -0,0 +1 @@
+phablet
\ No newline at end of file