Removed goog.require from test code.

This removed any goog.require from the test code to make it simpler.
Now, shaka-player.uncompiled is required to be loaded before any
tests.  This fixes some dependency problems.

This also moves the utility test code to test/util.

Change-Id: I8991a61fc59c9c03e0143bb0883fd6d166af86c2

test/dash_parser_segment_base_unit.js

@@ -15,9 +15,6 @@
  * limitations under the License.
  */
 
-goog.require('shaka.dash.DashParser');
-goog.require('shaka.util.Uint8ArrayUtils');
-
 describe('DashParser.SegmentBase', function() {
   it('requests init data for WebM', function(done) {
     var source = [