Move HostKeyPair into protocol::KeyPair.

remoting/protocol/authenticator_test_base.h

Index: remoting/protocol/authenticator_test_base.h
diff --git a/remoting/protocol/authenticator_test_base.h b/remoting/protocol/authenticator_test_base.h
index fc4856c5ca5f8b0ccbc85a40e5c7867116cb3987..b8671376bcd83628ecf8eb3285e44effab995e13 100644
--- a/remoting/protocol/authenticator_test_base.h
+++ b/remoting/protocol/authenticator_test_base.h
@@ -12,10 +12,6 @@
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace crypto {
-class RSAPrivateKey;
-}  // namespace crypto
-
 namespace net {
 class StreamSocket;
 }  // namespace net
@@ -26,6 +22,7 @@ namespace protocol {
 class Authenticator;
 class ChannelAuthenticator;
 class FakeSocket;
+class KeyPair;
 
 class AuthenticatorTestBase : public testing::Test {
  public:
@@ -51,7 +48,7 @@ class AuthenticatorTestBase : public testing::Test {
 
   MessageLoop message_loop_;
 
-  scoped_ptr<crypto::RSAPrivateKey> private_key_;
+  scoped_ptr<KeyPair> key_pair_;
   std::string host_cert_;
   scoped_ptr<Authenticator> host_;
   scoped_ptr<Authenticator> client_;