Update pubspecs and dependencies to get pkgbuild tests working.

third_party/pkg/angular/lib/core/interpolate.dart

-part of angular.core;
-
-class Interpolation {
-  final String template;
-  final List<String> seperators;
-  final List<String> expressions;
-  Function setter = (_) => _;
-
-  Interpolation(this.template, this.seperators, this.expressions);
-
-  String call(List parts, [_]) {
-    if (parts == null) return seperators.join('');
-    var str = [];
-    for (var i = 0; i < parts.length; i++) {
-      str.add(seperators[i]);
-      var value = parts[i];
-      str.add(value == null ? '' : '$value');
-    }
-    str.add(seperators.last);
-    return setter(str.join(''));
-  }
-}
-
-/**
- * Compiles a string with markup into an interpolation function. This service
- * is used by the HTML [Compiler] service for data binding.
- *
- *
- *     var $interpolate = ...; // injected
- *     var exp = $interpolate('Hello {{name}}!');
- *     expect(exp({name:'Angular'}).toEqual('Hello Angular!');
- */
-@NgInjectableService()
-class Interpolate {
-  final Parser _parse;
-
-  Interpolate(this._parse);
-
-  /**
-   * Compiles markup text into interpolation function.
-   *
-   * - `text`: The markup text to interpolate in form `foo {{expr}} bar`.
-   * - `mustHaveExpression`: if set to true then the interpolation string must
-   *      have embedded expression in order to return an interpolation function.
-   *      Strings with no embedded expression will return null for the
-   *      interpolation function.
-   * - `startSymbol`: The symbol to start interpolation. '{{' by default.
-   * - `endSymbol`: The symbol to end interpolation. '}}' by default.
-   */
-  Interpolation call(String template, [bool mustHaveExpression = false,
-      String startSymbol = '{{', String endSymbol = '}}']) {
-    int startSymbolLength = startSymbol.length;
-    int endSymbolLength = endSymbol.length;
-    int startIndex;
-    int endIndex;
-    int index = 0;
-    int length = template.length;
-    bool hasInterpolation = false;
-    bool shouldAddSeparator = true;
-    String exp;
-    List<String> separators = [];
-    List<String> expressions = [];
-
-    while(index < length) {
-      if ( ((startIndex = template.indexOf(startSymbol, index)) != -1) &&
-           ((endIndex = template.indexOf(endSymbol, startIndex + startSymbolLength)) != -1) ) {
-        separators.add(template.substring(index, startIndex));
-        exp = template.substring(startIndex + startSymbolLength, endIndex);
-        expressions.add(exp);
-        index = endIndex + endSymbolLength;
-        hasInterpolation = true;
-      } else {
-        // we did not find anything, so we have to add the remainder to the chunks array
-        separators.add(template.substring(index));
-        shouldAddSeparator = false;
-        break;
-      }
-    }
-    if (shouldAddSeparator) {
-      separators.add('');
-    }
-    return (!mustHaveExpression || hasInterpolation)
-        ? new Interpolation(template, separators, expressions)
-        : null;
-  }
-}