//chrome/browser/chromeos: Change ScopedTempDir::path() to GetPath()

path() is being deprecated, GetPath() has better checking against wrong use.

For more context, see https://codereview.chromium.org/2275553005/.

[email protected]
BUG=640599

Review-Url: https://codereview.chromium.org/2318023002
Cr-Commit-Position: refs/heads/master@{#418533}
33 files changed