Remove GetTransport() from TransportChannelImpl

webrtc/p2p/base/faketransportcontroller.h

Index: webrtc/p2p/base/faketransportcontroller.h
diff --git a/webrtc/p2p/base/faketransportcontroller.h b/webrtc/p2p/base/faketransportcontroller.h
index 65c59be98d0ee93777f6454e8742ded125caf5b1..63e8fd31240d6c7385baea98effa1c65cd4ee436 100644
--- a/webrtc/p2p/base/faketransportcontroller.h
+++ b/webrtc/p2p/base/faketransportcontroller.h
@@ -45,11 +45,8 @@ struct PacketMessageData : public rtc::MessageData {
 class FakeTransportChannel : public TransportChannelImpl,
                              public rtc::MessageHandler {
  public:
-  explicit FakeTransportChannel(Transport* transport,
-                                const std::string& name,
-                                int component)
+  explicit FakeTransportChannel(const std::string& name, int component)
       : TransportChannelImpl(name, component),
-        transport_(transport),
         dtls_fingerprint_("", nullptr, 0) {}
   ~FakeTransportChannel() { Reset(); }
 
@@ -67,8 +64,6 @@ class FakeTransportChannel : public TransportChannelImpl,
   // synchronously "Send"-ing.
   void SetAsync(bool async) { async_ = async; }
 
-  Transport* GetTransport() override { return transport_; }
-
   TransportChannelState GetState() const override {
     if (connection_count_ == 0) {
       return had_connection_ ? TransportChannelState::STATE_FAILED
@@ -313,7 +308,6 @@ class FakeTransportChannel : public TransportChannelImpl,
 
  private:
   enum State { STATE_INIT, STATE_CONNECTING, STATE_CONNECTED };
-  Transport* transport_;
   FakeTransportChannel* dest_ = nullptr;
   State state_ = STATE_INIT;
   bool async_ = false;
@@ -414,8 +408,7 @@ class FakeTransport : public Transport {
     if (channels_.find(component) != channels_.end()) {
       return nullptr;
     }
-    FakeTransportChannel* channel =
-        new FakeTransportChannel(this, name(), component);
+    FakeTransportChannel* channel = new FakeTransportChannel(name(), component);
     channel->set_ssl_max_protocol_version(ssl_max_version_);
     channel->SetAsync(async_);
     SetChannelDestination(component, channel);