Reland "Remove our stream << overloads from non-test build targets."

This is a reland of c841d18d257ba8e4ed7d77d105e3c46006bb1e7e

Original change's description:
> Remove our stream << overloads from non-test build targets.
>
> Most are removed entirely, but RtcErrorType, RtpTransceiverDirection, IPAddress and
> SocketAddress are kept behind gtest's #ifdef UNIT_TEST.
>
> Bug: webrtc:8982
> Change-Id: I36db19891e7d25aeacb08b9a08aa2b4004765e70
> Reviewed-on: https://webrtc-review.googlesource.com/64143
> Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
> Reviewed-by: Benjamin Wright <benwright@webrtc.org>
> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
> Reviewed-by: Åsa Persson <asapersson@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#22916}

TBR=deadbeef@webrtc.org,kwiberg@webrtc.org,asapersson@webrtc.org,jonasolsson@webrtc.org,benwright@webrtc.org

Bug: webrtc:8982
Change-Id: Ibe08c6270e5e693eb661a6ce9e8f074b34ef8123
Reviewed-on: https://webrtc-review.googlesource.com/71161
Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
Reviewed-by: Jonas Olsson <jonasolsson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22949}
diff --git a/api/audio_codecs/audio_format.cc b/api/audio_codecs/audio_format.cc
index 82c166f..9db5ce0 100644
--- a/api/audio_codecs/audio_format.cc
+++ b/api/audio_codecs/audio_format.cc
@@ -68,20 +68,6 @@
   swap(a.parameters, b.parameters);
 }
 
-std::ostream& operator<<(std::ostream& os, const SdpAudioFormat& saf) {
-  os << "{name: " << saf.name;
-  os << ", clockrate_hz: " << saf.clockrate_hz;
-  os << ", num_channels: " << saf.num_channels;
-  os << ", parameters: {";
-  const char* sep = "";
-  for (const auto& kv : saf.parameters) {
-    os << sep << kv.first << ": " << kv.second;
-    sep = ", ";
-  }
-  os << "}}";
-  return os;
-}
-
 AudioCodecInfo::AudioCodecInfo(int sample_rate_hz,
                                size_t num_channels,
                                int bitrate_bps)
@@ -108,23 +94,4 @@
   RTC_DCHECK_GE(max_bitrate_bps, default_bitrate_bps);
 }
 
-std::ostream& operator<<(std::ostream& os, const AudioCodecInfo& aci) {
-  os << "{sample_rate_hz: " << aci.sample_rate_hz;
-  os << ", num_channels: " << aci.num_channels;
-  os << ", default_bitrate_bps: " << aci.default_bitrate_bps;
-  os << ", min_bitrate_bps: " << aci.min_bitrate_bps;
-  os << ", max_bitrate_bps: " << aci.max_bitrate_bps;
-  os << ", allow_comfort_noise: " << aci.allow_comfort_noise;
-  os << ", supports_network_adaption: " << aci.supports_network_adaption;
-  os << "}";
-  return os;
-}
-
-std::ostream& operator<<(std::ostream& os, const AudioCodecSpec& acs) {
-  os << "{format: " << acs.format;
-  os << ", info: " << acs.info;
-  os << "}";
-  return os;
-}
-
 }  // namespace webrtc
diff --git a/api/audio_codecs/audio_format.h b/api/audio_codecs/audio_format.h
index 2a85c6f..553ab8f 100644
--- a/api/audio_codecs/audio_format.h
+++ b/api/audio_codecs/audio_format.h
@@ -12,7 +12,6 @@
 #define API_AUDIO_CODECS_AUDIO_FORMAT_H_
 
 #include <map>
-#include <ostream>
 #include <string>
 #include <utility>
 
@@ -62,7 +61,6 @@
 };
 
 void swap(SdpAudioFormat& a, SdpAudioFormat& b);
-std::ostream& operator<<(std::ostream& os, const SdpAudioFormat& saf);
 
 // Information about how an audio format is treated by the codec implementation.
 // Contains basic information, such as sample rate and number of channels, which
@@ -121,8 +119,6 @@
                                            // network conditions.
 };
 
-std::ostream& operator<<(std::ostream& os, const AudioCodecInfo& aci);
-
 // AudioCodecSpec ties an audio format to specific information about the codec
 // and its implementation.
 struct AudioCodecSpec {
@@ -136,8 +132,6 @@
   AudioCodecInfo info;
 };
 
-std::ostream& operator<<(std::ostream& os, const AudioCodecSpec& acs);
-
 }  // namespace webrtc
 
 #endif  // API_AUDIO_CODECS_AUDIO_FORMAT_H_
diff --git a/api/rtcerror.cc b/api/rtcerror.cc
index 5a8ba03..55ac15e 100644
--- a/api/rtcerror.cc
+++ b/api/rtcerror.cc
@@ -93,10 +93,6 @@
   }
 }
 
-std::ostream& operator<<(std::ostream& stream, RTCErrorType error) {
-  return stream << ToString(error);
-}
-
 // TODO(jonasolsson): Change to use absl::string_view when it's available.
 std::string ToString(RTCErrorType error) {
   int index = static_cast<int>(error);
diff --git a/api/rtcerror.h b/api/rtcerror.h
index d7dec29..c87ce91 100644
--- a/api/rtcerror.h
+++ b/api/rtcerror.h
@@ -11,7 +11,9 @@
 #ifndef API_RTCERROR_H_
 #define API_RTCERROR_H_
 
+#ifdef UNIT_TEST
 #include <ostream>
+#endif  // UNIT_TEST
 #include <string>
 #include <utility>  // For std::move.
 
@@ -143,10 +145,16 @@
 // error type.
 //
 // Only intended to be used for logging/disagnostics.
-std::ostream& operator<<(std::ostream& stream, RTCErrorType error);
-
 std::string ToString(RTCErrorType error);
 
+#ifdef UNIT_TEST
+inline std::ostream& operator<<(  // no-presubmit-check TODO(webrtc:8982)
+    std::ostream& stream,         // no-presubmit-check TODO(webrtc:8982)
+    RTCErrorType error) {
+  return stream << ToString(error);
+}
+#endif  // UNIT_TEST
+
 // Helper macro that can be used by implementations to create an error with a
 // message and log it. |message| should be a string literal or movable
 // std::string.
diff --git a/api/rtptransceiverinterface.h b/api/rtptransceiverinterface.h
index 7805579..7d2a1df 100644
--- a/api/rtptransceiverinterface.h
+++ b/api/rtptransceiverinterface.h
@@ -30,9 +30,6 @@
   kInactive
 };
 
-// This is provided as a debugging aid. The format of the output is unspecified.
-std::ostream& operator<<(std::ostream& os, RtpTransceiverDirection direction);
-
 // Structure for initializing an RtpTransceiver in a call to
 // PeerConnectionInterface::AddTransceiver.
 // https://w3c.github.io/webrtc-pc/#dom-rtcrtptransceiverinit
diff --git a/common_types.h b/common_types.h
index ae47811..580f83a 100644
--- a/common_types.h
+++ b/common_types.h
@@ -223,16 +223,6 @@
   }
 
   bool operator!=(const CodecInst& other) const { return !(*this == other); }
-
-  friend std::ostream& operator<<(std::ostream& os, const CodecInst& ci) {
-    os << "{pltype: " << ci.pltype;
-    os << ", plname: " << ci.plname;
-    os << ", plfreq: " << ci.plfreq;
-    os << ", pacsize: " << ci.pacsize;
-    os << ", channels: " << ci.channels;
-    os << ", rate: " << ci.rate << "}";
-    return os;
-  }
 };
 
 // RTP
diff --git a/media/base/codec.h b/media/base/codec.h
index 30844c7..7bbb7db 100644
--- a/media/base/codec.h
+++ b/media/base/codec.h
@@ -149,28 +149,6 @@
   }
 };
 
-inline std::ostream& operator<<(std::ostream& os, const AudioCodec& ac) {
-  os << "{id: " << ac.id;
-  os << ", name: " << ac.name;
-  os << ", clockrate: " << ac.clockrate;
-  os << ", bitrate: " << ac.bitrate;
-  os << ", channels: " << ac.channels;
-  os << ", params: {";
-  const char* sep = "";
-  for (const auto& kv : ac.params) {
-    os << sep << kv.first << ": " << kv.second;
-    sep = ", ";
-  }
-  os << "}, feedback_params: {";
-  sep = "";
-  for (const FeedbackParam& fp : ac.feedback_params.params()) {
-    os << sep << fp.id() << ": " << fp.param();
-    sep = ", ";
-  }
-  os << "}}";
-  return os;
-}
-
 struct VideoCodec : public Codec {
   // Creates a codec with the given parameters.
   VideoCodec(int id, const std::string& name);
diff --git a/modules/video_coding/codecs/h264/include/h264_globals.h b/modules/video_coding/codecs/h264/include/h264_globals.h
index 365dbca..bfeba67 100644
--- a/modules/video_coding/codecs/h264/include/h264_globals.h
+++ b/modules/video_coding/codecs/h264/include/h264_globals.h
@@ -53,11 +53,6 @@
   return "";
 }
 
-inline std::ostream& operator<<(std::ostream& stream,
-                                H264PacketizationMode mode) {
-  return stream << ToString(mode);
-}
-
 struct NaluInfo {
   uint8_t type;
   int sps_id;
diff --git a/pc/rtpmediautils.h b/pc/rtpmediautils.h
index 6de6f8f..5f02d89 100644
--- a/pc/rtpmediautils.h
+++ b/pc/rtpmediautils.h
@@ -44,6 +44,14 @@
 // Returns an unspecified string representation of the given direction.
 const char* RtpTransceiverDirectionToString(RtpTransceiverDirection direction);
 
+#ifdef UNIT_TEST
+inline std::ostream& operator<<(  // no-presubmit-check TODO(webrtc:8982)
+    std::ostream& os,             // no-presubmit-check TODO(webrtc:8982)
+    RtpTransceiverDirection direction) {
+  return os << RtpTransceiverDirectionToString(direction);
+}
+#endif  // UNIT_TEST
+
 }  // namespace webrtc
 
 #endif  // PC_RTPMEDIAUTILS_H_
diff --git a/pc/rtptransceiver.cc b/pc/rtptransceiver.cc
index 41ee487..37770b5 100644
--- a/pc/rtptransceiver.cc
+++ b/pc/rtptransceiver.cc
@@ -16,10 +16,6 @@
 
 namespace webrtc {
 
-std::ostream& operator<<(std::ostream& os, RtpTransceiverDirection direction) {
-  return os << RtpTransceiverDirectionToString(direction);
-}
-
 RtpTransceiver::RtpTransceiver(cricket::MediaType media_type)
     : unified_plan_(false), media_type_(media_type) {
   RTC_DCHECK(media_type == cricket::MEDIA_TYPE_AUDIO ||
diff --git a/rtc_base/ipaddress.cc b/rtc_base/ipaddress.cc
index 3f7698a..e6a02c4 100644
--- a/rtc_base/ipaddress.cc
+++ b/rtc_base/ipaddress.cc
@@ -120,11 +120,6 @@
   return false;
 }
 
-std::ostream& operator<<(std::ostream& os, const IPAddress& ip) {
-  os << ip.ToString();
-  return os;
-}
-
 in6_addr IPAddress::ipv6_address() const {
   return u_.ip6;
 }
@@ -216,10 +211,6 @@
   return *this;
 }
 
-std::ostream& operator<<(std::ostream& os, const InterfaceAddress& ip) {
-  return os << ip.ToString();
-}
-
 std::string InterfaceAddress::ToString() const {
   std::string result = IPAddress::ToString();
 
diff --git a/rtc_base/ipaddress.h b/rtc_base/ipaddress.h
index aa8bb1a..c965cf1 100644
--- a/rtc_base/ipaddress.h
+++ b/rtc_base/ipaddress.h
@@ -83,7 +83,13 @@
   bool operator!=(const IPAddress& other) const;
   bool operator <(const IPAddress& other) const;
   bool operator >(const IPAddress& other) const;
-  friend std::ostream& operator<<(std::ostream& os, const IPAddress& addr);
+
+#ifdef UNIT_TEST
+  inline std::ostream& operator<<(  // no-presubmit-check TODO(webrtc:8982)
+      std::ostream& os) {           // no-presubmit-check TODO(webrtc:8982)
+    return os << ToString();
+  }
+#endif  // UNIT_TEST
 
   int family() const { return family_; }
   in_addr ipv4_address() const;
@@ -141,8 +147,6 @@
   bool operator!=(const InterfaceAddress& other) const;
 
   int ipv6_flags() const { return ipv6_flags_; }
-  friend std::ostream& operator<<(std::ostream& os,
-                                  const InterfaceAddress& addr);
 
   std::string ToString() const;
 
diff --git a/rtc_base/socketaddress.cc b/rtc_base/socketaddress.cc
index bddb7bc..a58c001 100644
--- a/rtc_base/socketaddress.cc
+++ b/rtc_base/socketaddress.cc
@@ -199,11 +199,6 @@
   return true;
 }
 
-std::ostream& operator<<(std::ostream& os, const SocketAddress& addr) {
-  os << addr.HostAsURIString() << ":" << addr.port();
-  return os;
-}
-
 bool SocketAddress::IsAnyIP() const {
   return IPIsAny(ip_);
 }
diff --git a/rtc_base/socketaddress.h b/rtc_base/socketaddress.h
index d58eed8..90919c2 100644
--- a/rtc_base/socketaddress.h
+++ b/rtc_base/socketaddress.h
@@ -13,6 +13,9 @@
 
 #include <iosfwd>
 #include <string>
+#ifdef UNIT_TEST
+#include <ostream>  // no-presubmit-check TODO(webrtc:8982)
+#endif              // UNIT_TEST
 #include <vector>
 #include "rtc_base/basictypes.h"
 #include "rtc_base/ipaddress.h"
@@ -126,7 +129,12 @@
   // Parses hostname:port and [hostname]:port.
   bool FromString(const std::string& str);
 
-  friend std::ostream& operator<<(std::ostream& os, const SocketAddress& addr);
+#ifdef UNIT_TEST
+  inline std::ostream& operator<<(  // no-presubmit-check TODO(webrtc:8982)
+      std::ostream& os) {           // no-presubmit-check TODO(webrtc:8982)
+    return os << HostAsURIString() << ":" << port();
+  }
+#endif  // UNIT_TEST
 
   // Determines whether this represents a missing / any IP address.
   // That is, 0.0.0.0 or ::.