Chrome suggestions are no longer served if the user doesn't sync his history on a given machine

chrome/browser/ui/search/search_ipc_router.h

Index: chrome/browser/ui/search/search_ipc_router.h
diff --git a/chrome/browser/ui/search/search_ipc_router.h b/chrome/browser/ui/search/search_ipc_router.h
index 03ef3d2bd5f76e900e9f93dbf1cda3fdf5a316cf..d8b5e15ae14f046858d4ac0662c62779ce33b273 100644
--- a/chrome/browser/ui/search/search_ipc_router.h
+++ b/chrome/browser/ui/search/search_ipc_router.h
@@ -77,6 +77,10 @@ class SearchIPCRouter : public content::WebContentsObserver {
     // Called when the SearchBox wants to verify the signed-in Chrome identity
     // against the provided |identity|. Will make a round-trip to the browser
     // and eventually return the result through SendChromeIdentityCheckResult.
+    // Calls SendChromeIdentityCheckResult with true if both the identity
+    // matches and the user syncs their history.
+    // TODO(beaudoin): Change this function name and related APIs now that it's
+    // checking both the identity and the user's sync state.
     virtual void OnChromeIdentityCheck(const base::string16& identity) = 0;
   };