Remove NOTIMPLEMENTED in BinaryFCMService

There's a few NOTIMPLEMENTED in BinaryFCMService that really should
just do nothing. This CL removes them.

Fixed: 1019875
Change-Id: I6b63e687b69d2da268d4dd12bcf0d892556f45f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893524
Commit-Queue: Daniel Rubery <drubery@chromium.org>
Auto-Submit: Daniel Rubery <drubery@chromium.org>
Reviewed-by: Bettina Dea <bdea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711508}

chrome/browser/safe_browsing/download_protection/binary_fcm_service.cc

@@ -105,9 +105,7 @@ void BinaryFCMService::ShutdownHandler() {
   gcm_driver_ = nullptr;
 }
 
-void BinaryFCMService::OnStoreReset() {
-  NOTIMPLEMENTED();
-}
+void BinaryFCMService::OnStoreReset() {}
 
 void BinaryFCMService::OnMessage(const std::string& app_id,
                                  const gcm::IncomingMessage& message) {
@@ -143,20 +141,14 @@ void BinaryFCMService::OnMessage(const std::string& app_id,
   callback_it->second.Run(std::move(response));
 }
 
-void BinaryFCMService::OnMessagesDeleted(const std::string& app_id) {
-  NOTIMPLEMENTED();
-}
+void BinaryFCMService::OnMessagesDeleted(const std::string& app_id) {}
 
 void BinaryFCMService::OnSendError(
     const std::string& app_id,
-    const gcm::GCMClient::SendErrorDetails& send_error_details) {
-  NOTIMPLEMENTED();
-}
+    const gcm::GCMClient::SendErrorDetails& send_error_details) {}
 
 void BinaryFCMService::OnSendAcknowledged(const std::string& app_id,
-                                          const std::string& message_id) {
-  NOTIMPLEMENTED();
-}
+                                          const std::string& message_id) {}
 
 bool BinaryFCMService::CanHandle(const std::string& app_id) const {
   return app_id == kBinaryFCMServiceAppId;