[Cast] Limit frames in flight by duration, and not by number of frames.

media/cast/net/rtp/rtp_packetizer_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/cast/net/rtp/rtp_packetizer.h"
 
 #include <stdint.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/test/simple_test_tick_clock.h"
@@ skipping 84 matching lines @@
   int expected_packet_id_;
   uint32 expected_frame_id_;
   uint32 expectd_rtp_timestamp_;
 
   DISALLOW_COPY_AND_ASSIGN(TestRtpPacketTransport);
 };
 
 class RtpPacketizerTest : public ::testing::Test {
  protected:
   RtpPacketizerTest()
-      : task_runner_(new test::FakeSingleThreadTaskRunner(&testing_clock_)),
-        video_frame_(),
-        packet_storage_(200) {
+      : task_runner_(new test::FakeSingleThreadTaskRunner(&testing_clock_)) {
     config_.sequence_number = kSeqNum;
     config_.ssrc = kSsrc;
     config_.payload_type = kPayload;
     config_.max_payload_length = kMaxPacketLength;
     transport_.reset(new TestRtpPacketTransport(config_));
     pacer_.reset(new PacedSender(
         &testing_clock_, &logging_, transport_.get(), task_runner_));
     pacer_->RegisterVideoSsrc(config_.ssrc);
     rtp_packetizer_.reset(new RtpPacketizer(
         pacer_.get(), &packet_storage_, config_));
@@ skipping 50 matching lines @@
   video_frame_.reference_time = testing_clock_.NowTicks();
   rtp_packetizer_->SendFrameAsPackets(video_frame_);
   RunTasks(33 + 1);
   EXPECT_EQ(expected_num_of_packets, rtp_packetizer_->send_packet_count());
   EXPECT_EQ(kFrameSize, rtp_packetizer_->send_octet_count());
   EXPECT_EQ(expected_num_of_packets, transport_->number_of_packets_received());
 }
 
 }  // namespace cast
 }  // namespace media