Convert components/ntp_snippets/* to OnPrimaryAccountChanged()

Methods OnPrimaryAccountSet/Cleared are deprecated. So this cl changes
these calls to OnPrimaryAccountChanged().

Bug: 1158855
Change-Id: Ie5a7880c7805f7a047345ee06111e78999db58ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612891Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Tanmoy Mollik <triploblastic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841044}

components/ntp_snippets/content_suggestions_service.cc

@@ -501,14 +501,18 @@ void ContentSuggestionsService::OnSuggestionInvalidated(
   }
 }
 // signin::IdentityManager::Observer implementation
-void ContentSuggestionsService::OnPrimaryAccountSet(
-    const CoreAccountInfo& account_info) {
+void ContentSuggestionsService::OnPrimaryAccountChanged(
+    const signin::PrimaryAccountChangeEvent& event_details) {
+  switch (event_details.GetEventTypeFor(signin::ConsentLevel::kSync)) {
+    case signin::PrimaryAccountChangeEvent::Type::kSet:
       OnSignInStateChanged(/*has_signed_in=*/true);
-}
-
-void ContentSuggestionsService::OnPrimaryAccountCleared(
-    const CoreAccountInfo& account_info) {
+      break;
+    case signin::PrimaryAccountChangeEvent::Type::kCleared:
       OnSignInStateChanged(/*has_signed_in=*/false);
+      break;
+    case signin::PrimaryAccountChangeEvent::Type::kNone:
+      break;
+  }
 }
 
 // history::HistoryServiceObserver implementation.

components/ntp_snippets/content_suggestions_service.h

@@ -281,8 +281,8 @@ class ContentSuggestionsService : public KeyedService,
       const ContentSuggestion::ID& suggestion_id) override;
 
   // signin::IdentityManager::Observer implementation.
-  void OnPrimaryAccountSet(const CoreAccountInfo& account_info) override;
-  void OnPrimaryAccountCleared(const CoreAccountInfo& account_info) override;
+  void OnPrimaryAccountChanged(
+      const signin::PrimaryAccountChangeEvent& event_details) override;
 
   // history::HistoryServiceObserver implementation.
   void OnURLsDeleted(history::HistoryService* history_service,