[CrOS Tether] Update SecureChannel and BleConnectionManager to use CryptAuthService instead of a Del

components/cryptauth/fake_secure_channel.h

Index: components/cryptauth/fake_secure_channel.h
diff --git a/components/cryptauth/fake_secure_channel.h b/components/cryptauth/fake_secure_channel.h
index e086801b9572ac01145e6e6fb15ce5f9d4ab128a..4a202d9a771e6c9011d5b09eacb0e7eb905d0013 100644
--- a/components/cryptauth/fake_secure_channel.h
+++ b/components/cryptauth/fake_secure_channel.h
@@ -10,11 +10,13 @@
 
 namespace cryptauth {
 
+class CryptAuthService;
+
 // A fake implementation of SecureChannel to use in tests.
 class FakeSecureChannel : public SecureChannel {
  public:
   FakeSecureChannel(std::unique_ptr<Connection> connection,
-                    std::unique_ptr<Delegate> delegate);
+                    CryptAuthService* cryptauth_service);
   ~FakeSecureChannel() override;
 
   struct SentMessage {