Use j7 methods.

Change-Id: I7304aa4392c835efa700d76676213f3294307b8f
Reviewed-on: http://gerrit.dmdirc.com/4049
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

test/com/dmdirc/util/io/DownloaderTest.java

 import java.io.IOException;
 import java.io.OutputStream;
 import java.net.URLConnection;
+import java.nio.charset.Charset;
 import java.nio.file.FileSystem;
 import java.nio.file.Files;
 import java.nio.file.Path;
         assertFalse(Files.exists(file));
         new TestableDownloader().downloadPage("rar", file);
         assertTrue(Files.exists(file));
-        assertEquals(Lists.newArrayList("OMG IM A FAKE DOWNLOAD"), Files.readAllLines(file));
+        assertEquals(Lists.newArrayList("OMG IM A FAKE DOWNLOAD"), Files.readAllLines(file,
+                Charset.forName("UTF-8")));
     }
 
     @Test
         assertFalse(Files.exists(file));
         new TestableDownloader().downloadPage("rar", file, listener);
         assertTrue(Files.exists(file));
-        assertEquals(Lists.newArrayList("OMG IM A FAKE DOWNLOAD"), Files.readAllLines(file));
+        assertEquals(Lists.newArrayList("OMG IM A FAKE DOWNLOAD"), Files.readAllLines(file,
+                Charset.forName("UTF-8")));
         verify(listener).setIndeterminate(anyBoolean());
         verify(listener, atLeastOnce()).downloadProgress(anyInt());
     }