Remove video_channel() from Session interface

remoting/protocol/rtp_video_writer_unittest.cc

Index: remoting/protocol/rtp_video_writer_unittest.cc
diff --git a/remoting/protocol/rtp_video_writer_unittest.cc b/remoting/protocol/rtp_video_writer_unittest.cc
index 272492745320d558fa5277c1c52c05ce5074906c..118c3005ea6e81f08a00766c36f5083b271d82f6 100644
--- a/remoting/protocol/rtp_video_writer_unittest.cc
+++ b/remoting/protocol/rtp_video_writer_unittest.cc
@@ -5,8 +5,10 @@
 #include <string>
 #include <vector>
 
+#include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
+#include "remoting/base/constants.h"
 #include "remoting/proto/video.pb.h"
 #include "remoting/protocol/fake_session.h"
 #include "remoting/protocol/rtp_reader.h"
@@ -57,7 +59,13 @@ class RtpVideoWriterTest : public testing::Test {
 
   virtual void SetUp() {
     session_.reset(new FakeSession());
-    writer_.Init(session_.get());
+    writer_.Init(session_.get(),
+                 base::Bind(&RtpVideoWriterTest::OnWriterInitialized,
+                            base::Unretained(this)));
+  }
+
+  void OnWriterInitialized(bool success) {
+    ASSERT_TRUE(success);
   }
 
   void InitData(int size) {
@@ -88,7 +96,7 @@ class RtpVideoWriterTest : public testing::Test {
   void VerifyResult(const ExpectedPacket expected[],
                     int count) {
     const vector<string>& rtp_packets =
-        session_->video_rtp_channel()->written_packets();
+        session_->GetDatagramChannel(kVideoRtpChannelName)->written_packets();
     ASSERT_EQ(count, static_cast<int>(rtp_packets.size()));
     int pos = 0;
     for (int i = 0; i < count; ++i) {