Fix reported test-tidy errors for unmerged import blocks

This merges import blocks that were reported by tidy as unmerged.

components/style/media_queries.rs

@@ -3,10 +3,9 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use cssparser::{Token, Parser, Delimiter};
-use std::ascii::AsciiExt;
-
 use euclid::size::{Size2D, TypedSize2D};
 use properties::longhands;
+use std::ascii::AsciiExt;
 use util::geometry::{Au, ViewportPx};
 use values::specified;