Fix relative location urls

Fixes #1668

Change-Id: Ib9e1a19254f1829795bd69cc930d21f33e136980

lib/dash/dash_parser.js

@@ -482,8 +482,10 @@ shaka.dash.DashParser.prototype.processManifest_ =
                       .map(XmlUtils.getContents)
                       .filter(Functional.isNotNull);
   if (locations.length > 0) {
-    this.manifestUris_ = locations;
-    manifestBaseUris = locations;
+    const absoluteLocations = shaka.util.ManifestParserUtils.resolveUris(
+          manifestBaseUris, locations);
+    this.manifestUris_ = absoluteLocations;
+    manifestBaseUris = absoluteLocations;
   }
 
   let uris = XmlUtils.findChildren(mpd, 'BaseURL').map(XmlUtils.getContents);

test/dash/dash_parser_live_unit.js

@@ -607,6 +607,7 @@ describe('DashParser Live', function() {
       '    minimumUpdatePeriod="PT' + updateTime + 'S">',
       '  <Location>http://foobar</Location>',
       '  <Location>http://foobar2</Location>',
+      '  <Location>foobar3</Location>',
       '  <Period id="1" duration="PT10S">',
       '    <AdaptationSet mimeType="video/mp4">',
       '      <Representation id="3" bandwidth="500">',
@@ -626,9 +627,12 @@ describe('DashParser Live', function() {
           fakeNetEngine.request.calls.reset();
 
           // Create a mock so we can verify it gives two URIs.
+          // The third location is a relative url, and should be resolved as an
+          // absolute url.
           fakeNetEngine.request.and.callFake(function(type, request) {
             expect(type).toBe(manifestRequest);
-            expect(request.uris).toEqual(['http://foobar', 'http://foobar2']);
+            expect(request.uris).toEqual(
+              ['http://foobar', 'http://foobar2', 'dummy://foo/foobar3']);
             let data = shaka.util.StringUtils.toUTF8(manifestText);
             return shaka.util.AbortableOperation.completed(
                 {uri: request.uris[0], data: data, headers: {}});