Use getDefaultLabel to get caption labels

__tests__/src/components/AudioViewer.test.js

@@ -40,8 +40,8 @@ describe('AudioViewer', () => {
           { getFormat: () => 'video/mp4', id: 1 },
         ],
         captions: [
-          { getLabel: () => 'English', getProperty: () => 'en', id: 1 },
-          { getLabel: () => 'French', getProperty: () => 'fr', id: 2 },
+          { getDefaultLabel: () => 'English', getProperty: () => 'en', id: 1 },
+          { getDefaultLabel: () => 'French', getProperty: () => 'fr', id: 2 },
         ],
       }, true);
       expect(wrapper.contains(<track src={1} label="English" srcLang="en" />)).toBe(true);

__tests__/src/components/VideoViewer.test.js

@@ -37,8 +37,8 @@ describe('VideoViewer', () => {
     it('captions', () => {
       wrapper = createWrapper({
         captions: [
-          { getLabel: () => 'English', getProperty: () => 'en', id: 1 },
-          { getLabel: () => 'French', getProperty: () => 'fr', id: 2 },
+          { getDefaultLabel: () => 'English', getProperty: () => 'en', id: 1 },
+          { getDefaultLabel: () => 'French', getProperty: () => 'fr', id: 2 },
         ],
         videoResources: [
           { getFormat: () => 'video/mp4', id: 1 },

src/components/AudioViewer.js

@@ -20,7 +20,7 @@ export class AudioViewer extends Component {
           ))}
           {captions.map(caption => (
             <Fragment key={caption.id}>
-              <track src={caption.id} label={caption.getLabel()} srcLang={caption.getProperty('language')} />
+              <track src={caption.id} label={caption.getDefaultLabel()} srcLang={caption.getProperty('language')} />
             </Fragment>
           ))}
         </audio>

src/components/VideoViewer.js

@@ -19,7 +19,7 @@ export class VideoViewer extends Component {
           ))}
           {captions.map(caption => (
             <Fragment key={caption.id}>
-              <track src={caption.id} label={caption.getLabel()} srcLang={caption.getProperty('language')} />
+              <track src={caption.id} label={caption.getDefaultLabel()} srcLang={caption.getProperty('language')} />
             </Fragment>
           ))}
         </video>