1 files changed, 0 insertions, 30 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/best_standards_support.rb b/actionpack/lib/action_dispatch/middleware/best_standards_support.rb
deleted file mode 100644
index 94efeb79fa..0000000000
--- a/actionpack/lib/action_dispatch/middleware/best_standards_support.rb
+++ /dev/null
@@ -1,30 +0,0 @@
-module ActionDispatch
-  class BestStandardsSupport
-    def initialize(app, type = true)
-      @app = app
-
-      @header = case type
-      when true
-        "IE=Edge,chrome=1"
-      when :builtin
-        "IE=Edge"
-      when false
-        nil
-      end
-    end
-
-    def call(env)
-      status, headers, body = @app.call(env)
-
-      if headers["X-UA-Compatible"] && @header
-        unless headers["X-UA-Compatible"][@header]
-          headers["X-UA-Compatible"] << "," << @header.to_s
-        end
-      else
-        headers["X-UA-Compatible"] = @header
-      end
-
-      [status, headers, body]
-    end
-  end
-end