Reland: CaptivePortalData: use CharSequence in VenueFriendlyName API

Following up on feedback from API council, change the String type
to CharSequence in the get and set Venue friendly name API.

Bug: 179163405
Test: atest ConnectivityServiceTest CtsNetTestCasesLatestSdk:CaptivePortalDataTest
Test: atest NetworkNotificationManagerTest NetworkMonitorTest
Change-Id: Ifa3ea9aae0cabf5757791c4ae13e6f551759ed97
3 files changed
tree: b315ebee1d91e4fe4f36d46de832e4aab55df3d7
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS