GitLab

SyncExtensionFunctions, AsyncExtensionFunctions,
ChromeSyncExtensionFunctions, and ChromeAsyncExtensionFunctions are
deprecated.

Remove ChromeSyncExtensionFunctions from:
- launcher_search_provider
- hotword_private
- i18n
- identity
- omnibox

BUG=634140

Review-Url: https://codereview.chromium.org/2344653002
Cr-Commit-Position: refs/heads/master@{#418733}