Open search result of drive search in Chrome Launcher.

If a search result is a directory, open it with file manager.
If a search result is a file, try to execute default task. When it fails, opens a file manager with selecting the entry.

BUG=440649
TEST=manually tested; Enable launcher-search-provider-api flag, type some query in chrome launcher. Click the search result and confirm that the result is opened.

Review URL: https://codereview.chromium.org/1092513003

Cr-Commit-Position: refs/heads/master@{#325999}
2 files changed