Simplify VideoEncoder interface.

remoting/codec/codec_test.cc

Index: remoting/codec/codec_test.cc
diff --git a/remoting/codec/codec_test.cc b/remoting/codec/codec_test.cc
index eff143d1c6e1dca9d1fc8c926ccf023eb0b84997..651a2dc04ed56c54d359ece700dd516aa82a4354 100644
--- a/remoting/codec/codec_test.cc
+++ b/remoting/codec/codec_test.cc
@@ -358,8 +358,8 @@ static void TestEncodingRects(VideoEncoder* encoder,
   }
   tester->AddRects(rects, count);
 
-  encoder->Encode(frame, base::Bind(
-      &VideoEncoderTester::DataAvailable, base::Unretained(tester)));
+  scoped_ptr<VideoPacket> packet = encoder->Encode(*frame);
+  tester->DataAvailable(packet.Pass());
 }
 
 void TestVideoEncoder(VideoEncoder* encoder, bool strict) {
@@ -412,8 +412,8 @@ static void TestEncodeDecodeRects(VideoEncoder* encoder,
     }
   }
 
-  encoder->Encode(frame, base::Bind(&VideoEncoderTester::DataAvailable,
-                                    base::Unretained(encoder_tester)));
+  scoped_ptr<VideoPacket> packet = encoder->Encode(*frame);
+  encoder_tester->DataAvailable(packet.Pass());
   decoder_tester->VerifyResults();
   decoder_tester->Reset();
 }
@@ -475,9 +475,8 @@ void TestVideoEncoderDecoderGradient(VideoEncoder* encoder,
   decoder_tester.set_frame(frame.get());
   decoder_tester.AddRegion(frame->updated_region());
 
-  encoder->Encode(frame.get(),
-                  base::Bind(&VideoDecoderTester::ReceivedScopedPacket,
-                             base::Unretained(&decoder_tester)));
+  scoped_ptr<VideoPacket> packet = encoder->Encode(*frame);
+  decoder_tester.ReceivedScopedPacket(packet.Pass());
 
   decoder_tester.VerifyResultsApprox(expected_result->data(),
                                      max_error_limit, mean_error_limit);