hg: jdk9/dev/jdk: 8081522: build failed with jdk8081452 change.

[xueming.shen at oracle.com]

Changeset: c8c36ae2897a
Author:    sherman
Date:      2015-05-29 10:28 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/c8c36ae2897a

8081522: build failed with jdk8081452 change.
Summary: to remove the missed import line
Reviewed-by: alanb

! src/jdk.charsets/share/classes/sun/nio/cs/ext/ExtendedCharsets.java.template