Remove references to Profile from browser_context_keyed_service.

chrome/browser/thumbnails/thumbnail_service.h

Index: chrome/browser/thumbnails/thumbnail_service.h
diff --git a/chrome/browser/thumbnails/thumbnail_service.h b/chrome/browser/thumbnails/thumbnail_service.h
index 6c0eacf86301d40139a4d63c4f2dd93176cbb31c..9c7e3953044a6d7dfa7fa2cfb6d1f197b18e00a3 100644
--- a/chrome/browser/thumbnails/thumbnail_service.h
+++ b/chrome/browser/thumbnails/thumbnail_service.h
@@ -22,7 +22,7 @@ struct ThumbnailingContext;
 // An interface abstracting access to thumbnails. Intended as a temporary
 // bridge facilitating switch from TopSites as the thumbnail source to a more
 // robust way of handling these artefacts.
-class ThumbnailService : public RefcountedProfileKeyedService {
+class ThumbnailService : public RefcountedBrowserContextKeyedService {
  public:
   // Sets the given thumbnail for the given URL. Returns true if the thumbnail
   // was updated. False means either the URL wasn't known to us, or we felt