Remove done notifications from incoming message handlers.

remoting/test/protocol_perftest.cc

Index: remoting/test/protocol_perftest.cc
diff --git a/remoting/test/protocol_perftest.cc b/remoting/test/protocol_perftest.cc
index bbafe9455247c34cb7744735ed2c99400706eaad..65173121675044e47b95be7e8d2db9f3ec9c390f 100644
--- a/remoting/test/protocol_perftest.cc
+++ b/remoting/test/protocol_perftest.cc
@@ -131,11 +131,11 @@ class ProtocolPerfTest
   // protocol::VideoStub interface.
   void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
                           const base::Closure& done) override {
-    if (video_packet->data().empty()) {
-      // Ignore keep-alive packets
-      done.Run();
+    done.Run();
+
+    // Ignore keep-alive packets.
+    if (video_packet->data().empty())
       return;
-    }
 
     last_video_packet_ = std::move(video_packet);