Split out QuicAlarm creation from QuicConnectionHelper to new QuicAlarmFactory.

net/quic/test_tools/quic_test_utils.h

Index: net/quic/test_tools/quic_test_utils.h
diff --git a/net/quic/test_tools/quic_test_utils.h b/net/quic/test_tools/quic_test_utils.h
index 83a800ec187bbc8ba566d959368b3b04e6b80d9c..ad1a443a6daaec6ea8a324fe32bd15d48aa60e5f 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -318,12 +318,23 @@ class MockConnectionHelper : public QuicConnectionHelperInterface {
   ~MockConnectionHelper() override;
   const QuicClock* GetClock() const override;
   QuicRandom* GetRandomGenerator() override;
+  QuicBufferAllocator* GetBufferAllocator() override;
+  void AdvanceTime(QuicTime::Delta delta);
+
+ private:
+  MockClock clock_;
+  MockRandom random_generator_;
+  SimpleBufferAllocator buffer_allocator_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockConnectionHelper);
+};
+
+class MockAlarmFactory : public QuicAlarmFactory {
+ public:
   QuicAlarm* CreateAlarm(QuicAlarm::Delegate* delegate) override;
   QuicArenaScopedPtr<QuicAlarm> CreateAlarm(
       QuicArenaScopedPtr<QuicAlarm::Delegate> delegate,
       QuicConnectionArena* arena) override;
-  QuicBufferAllocator* GetBufferAllocator() override;
-  void AdvanceTime(QuicTime::Delta delta);
 
   // No-op alarm implementation
   class TestAlarm : public QuicAlarm {
@@ -340,38 +351,37 @@ class MockConnectionHelper : public QuicConnectionHelperInterface {
   void FireAlarm(QuicAlarm* alarm) {
     reinterpret_cast<TestAlarm*>(alarm)->Fire();
   }
-
- private:
-  MockClock clock_;
-  MockRandom random_generator_;
-  SimpleBufferAllocator buffer_allocator_;
-
-  DISALLOW_COPY_AND_ASSIGN(MockConnectionHelper);
 };
 
 class MockConnection : public QuicConnection {
  public:
   // Uses a ConnectionId of 42 and 127.0.0.1:123.
-  MockConnection(MockConnectionHelper* helper, Perspective perspective);
+  MockConnection(MockConnectionHelper* helper,
+                 MockAlarmFactory* alarm_factory,
+                 Perspective perspective);
 
   // Uses a ConnectionId of 42.
   MockConnection(IPEndPoint address,
                  MockConnectionHelper* helper,
+                 MockAlarmFactory* alarm_factory,
                  Perspective perspective);
 
   // Uses 127.0.0.1:123.
   MockConnection(QuicConnectionId connection_id,
                  MockConnectionHelper* helper,
+                 MockAlarmFactory* alarm_factory,
                  Perspective perspective);
 
   // Uses a ConnectionId of 42, and 127.0.0.1:123.
   MockConnection(MockConnectionHelper* helper,
+                 MockAlarmFactory* alarm_factory,
                  Perspective perspective,
                  const QuicVersionVector& supported_versions);
 
   MockConnection(QuicConnectionId connection_id,
                  IPEndPoint address,
                  MockConnectionHelper* helper,
+                 MockAlarmFactory* alarm_factory,
                  Perspective perspective,
                  const QuicVersionVector& supported_versions);
 
@@ -435,9 +445,12 @@ class MockConnection : public QuicConnection {
 
 class PacketSavingConnection : public MockConnection {
  public:
-  PacketSavingConnection(MockConnectionHelper* helper, Perspective perspective);
+  PacketSavingConnection(MockConnectionHelper* helper,
+                         MockAlarmFactory* alarm_factory,
+                         Perspective perspective);
 
   PacketSavingConnection(MockConnectionHelper* helper,
+                         MockAlarmFactory* alarm_factory,
                          Perspective perspective,
                          const QuicVersionVector& supported_versions);
 
@@ -791,6 +804,7 @@ void CreateClientSessionForTest(QuicServerId server_id,
                                 QuicTime::Delta connection_start_time,
                                 QuicVersionVector supported_versions,
                                 MockConnectionHelper* helper,
+                                MockAlarmFactory* alarm_factory,
                                 QuicCryptoClientConfig* crypto_client_config,
                                 PacketSavingConnection** client_connection,
                                 TestQuicSpdyClientSession** client_session);
@@ -815,6 +829,7 @@ void CreateServerSessionForTest(
     QuicTime::Delta connection_start_time,
     QuicVersionVector supported_versions,
     MockConnectionHelper* helper,
+    MockAlarmFactory* alarm_factory,
     QuicCryptoServerConfig* crypto_server_config,
     QuicCompressedCertsCache* compressed_certs_cache,
     PacketSavingConnection** server_connection,