Update pubspecs and dependencies to get pkgbuild tests working.

third_party/pkg/angular/playback_middleware/lib/playback.js

-
-function playback(opts) {
-  var records = [];
-  var seen = {};
-
-  function record(key, data) {
-    if (seen[key]) return;
-    records.push({key: key, data: data});
-    seen[key] = true;
-  }
-
-  function playback() {
-    var lines = [
-        'library angular.core.service.playback_data;',
-        '',
-        'import "dart:convert";',
-        '',
-        '// Auto-generated by record-playback',
-        '',
-        'Map<String, String> playbackData = {'
-    ];
-
-    records.forEach(function(r) {
-      var keyString = JSON.stringify(r.key).replace(/\$/g, '\\$');
-      var valueString = JSON.stringify(r.data).replace(/\$/g, '\\$');
-      lines.push('  ' + keyString + ': JSON.decode(' + valueString + '),');
-    });
-
-    lines.push('};');
-
-    return lines.join('\n');
-  }
-
-  return {
-    record: record,
-    playback: playback
-  }
-}
-
-module.exports = {
-  playback: playback
-};