diff --git a/webrtc/p2p/base/p2ptransportchannel.cc b/webrtc/p2p/base/p2ptransportchannel.cc
index a39ad93..ab7c322 100644
--- a/webrtc/p2p/base/p2ptransportchannel.cc
+++ b/webrtc/p2p/base/p2ptransportchannel.cc
@@ -984,12 +984,8 @@
 
   // Now update the writable state of the channel with the information we have
   // so far.
-  if (best_connection_ && best_connection_->writable()) {
-    HandleWritable();
-  } else if (all_connections_timedout) {
+  if (all_connections_timedout) {
     HandleAllTimedOut();
-  } else {
-    HandleNotWritable();
   }
 
   // Update the state of this channel.  This method is called whenever the
@@ -1055,12 +1051,8 @@
 }
 
 void P2PTransportChannel::UpdateChannelState() {
-  // The Handle* functions already set the writable state.  We'll just double-
-  // check it here.
   bool writable = best_connection_ && best_connection_->writable();
-  ASSERT(writable == this->writable());
-  if (writable != this->writable())
-    LOG(LS_ERROR) << "UpdateChannelState: writable state mismatch";
+  set_writable(writable);
 
   bool receiving = false;
   for (const Connection* connection : connections_) {
@@ -1091,22 +1083,6 @@
   }
 }
 
-// Go into the writable state and notify upper layer if it was not before.
-void P2PTransportChannel::HandleWritable() {
-  ASSERT(worker_thread_ == rtc::Thread::Current());
-  if (!writable()) {
-    set_writable(true);
-  }
-}
-
-// Notify upper layer about channel not writable state, if it was before.
-void P2PTransportChannel::HandleNotWritable() {
-  ASSERT(worker_thread_ == rtc::Thread::Current());
-  if (writable()) {
-    set_writable(false);
-  }
-}
-
 // If all connections timed out, delete them all.
 void P2PTransportChannel::HandleAllTimedOut() {
   for (Connection* connection : connections_) {
diff --git a/webrtc/p2p/base/p2ptransportchannel.h b/webrtc/p2p/base/p2ptransportchannel.h
index f3211e4..9f2f3a0 100644
--- a/webrtc/p2p/base/p2ptransportchannel.h
+++ b/webrtc/p2p/base/p2ptransportchannel.h
@@ -178,8 +178,6 @@
   void SortConnections();
   void SwitchBestConnectionTo(Connection* conn);
   void UpdateChannelState();
-  void HandleWritable();
-  void HandleNotWritable();
   void HandleAllTimedOut();
   void MaybeStopPortAllocatorSessions();
 
diff --git a/webrtc/p2p/base/transportchannel.h b/webrtc/p2p/base/transportchannel.h
index 767a5f6..ea18957 100644
--- a/webrtc/p2p/base/transportchannel.h
+++ b/webrtc/p2p/base/transportchannel.h
@@ -154,9 +154,6 @@
   std::string ToString() const;
 
  protected:
-  // TODO(honghaiz): Remove this once chromium's unit tests no longer call it.
-  void set_readable(bool readable) { set_receiving(readable); }
-
   // Sets the writable state, signaling if necessary.
   void set_writable(bool writable);