Made Selenium Rails integration tests at least runnable, although

there are failures.

lib/webrat/selenium.rb

@@ -1,13 +1,7 @@
 require "webrat"
 gem "selenium-client", ">=1.2.14"
 require "selenium/client"
-
-# active_support already defines silence_stream, no need to do that again if it's already present.
-# http://github.com/rails/rails/blob/master/activesupport/lib/active_support/core_ext/kernel/reporting.rb
-unless Kernel.respond_to?(:silence_stream)
-  require "webrat/selenium/silence_stream"
-end
-
+require "webrat/selenium/silence_stream"
 require "webrat/selenium/selenium_session"
 require "webrat/selenium/matchers"
 require "webrat/core_extensions/tcp_socket"

lib/webrat/selenium/silence_stream.rb

@@ -1,6 +1,9 @@
 module Webrat
   module Selenium
     module SilenceStream
+      # active_support already defines silence_stream, no need to do that again if it's already present.
+      # http://github.com/rails/rails/blob/master/activesupport/lib/active_support/core_ext/kernel/reporting.rb
+      unless Kernel.respond_to?(:silence_stream)
         def silence_stream(stream)
           old_stream = stream.dup
           stream.reopen(RUBY_PLATFORM =~ /mswin/ ? 'NUL:' : '/dev/null')
@@ -11,4 +14,5 @@ module Webrat
         end
       end
     end
+  end
 end

spec/integration/rails/test/integration/webrat_test.rb

@@ -2,10 +2,13 @@ require 'test_helper'
 
 class WebratTest < ActionController::IntegrationTest
 
+  # Firefox raises a security concern under Selenium
+  unless ENV['WEBRAT_INTEGRATION_MODE'] == 'selenium'
     test "should visit fully qualified urls" do
       visit root_url(:host => "chunkybacon.example.com")
       assert_equal "chunkybacon", request.subdomains.first
     end
+  end
 
   test "should visit pages" do
     visit root_path
@@ -68,11 +71,14 @@ class WebratTest < ActionController::IntegrationTest
     assert_have_selector "h1"
   end
 
+  # Firefox detects and prevents infinite redirects under Selenium
+  unless ENV['WEBRAT_INTEGRATION_MODE'] == 'selenium'
     test "should detect infinite redirects" do
       assert_raises Webrat::InfiniteRedirectError do
         visit infinite_redirect_path
       end
     end
+  end
 
 #  test "should be able to assert have tag" do
 #    visit root_path