Add separate send-side UMA stats for screenshare and video.

webrtc/video/send_statistics_proxy_unittest.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 10 matching lines @@
 
 class SendStatisticsProxyTest : public ::testing::Test {
  public:
   SendStatisticsProxyTest()
       : fake_clock_(1234), config_(GetTestConfig()), avg_delay_ms_(0),
         max_delay_ms_(0) {}
   virtual ~SendStatisticsProxyTest() {}
 
  protected:
   virtual void SetUp() {
-    statistics_proxy_.reset(
-        new SendStatisticsProxy(&fake_clock_, GetTestConfig()));
+    statistics_proxy_.reset(new SendStatisticsProxy(
+        &fake_clock_, GetTestConfig(),
+        VideoEncoderConfig::ContentType::kRealtimeVideo));
     expected_ = VideoSendStream::Stats();
   }
 
   VideoSendStream::Config GetTestConfig() {
     VideoSendStream::Config config(nullptr);
     config.rtp.ssrcs.push_back(17);
     config.rtp.ssrcs.push_back(42);
     config.rtp.rtx.ssrcs.push_back(18);
     config.rtp.rtx.ssrcs.push_back(43);
     return config;
@@ skipping 353 matching lines @@
   VideoSendStream::Stats stats = statistics_proxy_->GetStats();
   EXPECT_EQ(static_cast<int>(bitrate.bitrate_bps),
             stats.substreams[config_.rtp.ssrcs[0]].total_bitrate_bps);
   EXPECT_EQ(static_cast<int>(bitrate.bitrate_bps),
             stats.substreams[config_.rtp.ssrcs[0]].retransmit_bitrate_bps);
   EXPECT_EQ(0, stats.substreams[config_.rtp.ssrcs[1]].total_bitrate_bps);
   EXPECT_EQ(0, stats.substreams[config_.rtp.ssrcs[1]].retransmit_bitrate_bps);
 }
 
 }  // namespace webrtc