| Index: sdk/lib/html/dartium/html_dartium.dart
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| diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
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| index a5382551aad5bed0b99e20209300349b7b8b1a3f..e4979cc7de2d24a863cc1eac1b9c1a81f4e30fea 100644
|
| --- a/sdk/lib/html/dartium/html_dartium.dart
|
| +++ b/sdk/lib/html/dartium/html_dartium.dart
|
| @@ -31128,7 +31128,10 @@ abstract class CssClassSet implements Set<String> {
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| * This is the Dart equivalent of jQuery's
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| * [addClass](http://api.jquery.com/addClass/).
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| *
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| - * Returns `true` if [value] was added to the set, otherwise `false`.
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| + * If this corresponds to one element. Returns `true` if [value] was added to
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| + * the set, otherwise `false`.
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| + *
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| + * If this corresponds to many elements, `null` is always returned.
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| */
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| bool add(String value);
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|