Fix ClientHintsFactory::GetForBrowserContext implementation

BrowserContextKeyedServiceFactory sub-classes should use the method
GetServiceForBrowserContext in their implementation of the method
GetForBrowserContext.

Fix ClientHintsFactory::GetForBrowserContext.

Bug: 932534
Change-Id: Id3a17fa205474d304f7ce12450e728eee90bb02e
Reviewed-on: https://chromium-review.googlesource.com/c/1475452
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#633078}
1 file changed