Enable cpplint for webrtc/modules/bitrate_controller and fix all uncovered cpplint errors.

This CL enableds cpplint for webrtc/modules/bitrate_controller.

BUG=webrtc:5311
NOTRY=true

TESTED=Fixed issues reported by:
find webrtc/modules/bitrate_controller -type f -name *.cc -o -name *.h | xargs cpplint.py
followed by 'git cl presubmit'.

Review URL: https://codereview.webrtc.org/1620003003

Cr-Commit-Position: refs/heads/master@{#11363}

PRESUBMIT.py

@@ -20,6 +20,7 @@ CPPLINT_DIRS = [
   'webrtc/call',
   'webrtc/common_video',
   'webrtc/examples',
+  'webrtc/modules/bitrate_controller',
   'webrtc/modules/remote_bitrate_estimator',
   'webrtc/modules/rtp_rtcp',
   'webrtc/modules/video_coding',

webrtc/modules/bitrate_controller/bitrate_controller_impl.cc

@@ -12,6 +12,7 @@
 #include "webrtc/modules/bitrate_controller/bitrate_controller_impl.h"
 
 #include <algorithm>
+#include <map>
 #include <utility>
 
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"

webrtc/modules/bitrate_controller/bitrate_controller_unittest.cc

@@ -8,11 +8,11 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "testing/gtest/include/gtest/gtest.h"
-
 #include <algorithm>
 #include <vector>
 
+#include "testing/gtest/include/gtest/gtest.h"
+
 #include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 

webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.cc

@@ -10,6 +10,7 @@
 
 #include "webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h"
 
+#include <algorithm>
 #include <cmath>
 
 #include "webrtc/base/checks.h"
@@ -41,7 +42,7 @@ const UmaRampUpMetric kUmaRampupMetrics[] = {
 const size_t kNumUmaRampupMetrics =
     sizeof(kUmaRampupMetrics) / sizeof(kUmaRampupMetrics[0]);
 
-}
+}  // namespace
 
 SendSideBandwidthEstimation::SendSideBandwidthEstimation()
     : lost_packets_since_last_loss_update_Q8_(0),

webrtc/modules/bitrate_controller/send_side_bandwidth_estimation.h

@@ -14,6 +14,8 @@
 #define WEBRTC_MODULES_BITRATE_CONTROLLER_SEND_SIDE_BANDWIDTH_ESTIMATION_H_
 
 #include <deque>
+#include <utility>
+#include <vector>
 
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 #include "webrtc/system_wrappers/include/critical_section_wrapper.h"