Assorted logging pedantry

This cl fixes various minor issues found during a quick scan of the current log
usage.

Bug: webrtc:8529
Change-Id: I1e1eb02ef220177dbb327203509736ad7f70cc1c
Reviewed-on: https://webrtc-review.googlesource.com/52262
Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Henrik Grunell <henrikg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21996}
diff --git a/pc/webrtcsdp.cc b/pc/webrtcsdp.cc
index 535ed23..e796f4c 100644
--- a/pc/webrtcsdp.cc
+++ b/pc/webrtcsdp.cc
@@ -1483,7 +1483,7 @@
     } else if (streams.size() > 1u) {
       RTC_LOG(LS_WARNING)
           << "Trying to serialize Unified Plan SDP with more than "
-          << "one track in a media section. Omitting 'a=msid'.";
+             "one track in a media section. Omitting 'a=msid'.";
     }
   }
 
@@ -2459,8 +2459,8 @@
         bundle_only = false;
         RTC_LOG(LS_WARNING)
             << "a=bundle-only attribute observed with a nonzero "
-            << "port; this usage is unspecified so the attribute is being "
-            << "ignored.";
+               "port; this usage is unspecified so the attribute is being "
+               "ignored.";
       }
     } else {
       // If not using bundle-only, interpret port 0 in the normal way; the m=
@@ -3176,7 +3176,8 @@
   if (std::find(payload_types.begin(), payload_types.end(), payload_type) ==
       payload_types.end()) {
     RTC_LOG(LS_WARNING) << "Ignore rtpmap line that did not appear in the "
-                        << "<fmt> of the m-line: " << line;
+                           "<fmt> of the m-line: "
+                        << line;
     return true;
   }
   const std::string& encoder = fields[1];