tree 52a2bfe489d720959ad91fe8f85a9778e3b89c78
parent 1baec7a192368b1cd271d39993c31531ffa717d1
author stuartmorgan <stuartmorgan@google.com> 1614020047 -0800
committer GitHub <noreply@github.com> 1614020047 -0800
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[url_launcher] Update platforms to NNBD stable (#3584)

Updates all versions to stable.

Converts all desktop examples to null-safety, and migrates Linux and
macOS to use platform interface for examples rather than app-facing
package to eliminate circular dependencies (implementation copied
directly from Windows).