Replace NULL with nullptr in all C++ files.

webrtc/pc/mediasession.cc

Index: webrtc/pc/mediasession.cc
diff --git a/webrtc/pc/mediasession.cc b/webrtc/pc/mediasession.cc
index c596951f93afac61ab3e33c15ee008aa01197ee9..2fd8d2ed19c827ea9516aa4cb68606c5e4c2eea2 100644
--- a/webrtc/pc/mediasession.cc
+++ b/webrtc/pc/mediasession.cc
@@ -163,7 +163,7 @@ bool CreateMediaCryptos(const std::vector<std::string>& crypto_suites,
 
 const CryptoParamsVec* GetCryptos(const MediaContentDescription* media) {
   if (!media) {
-    return NULL;
+    return nullptr;
   }
   return &media->cryptos();
 }
@@ -578,7 +578,7 @@ static bool GetCryptosByName(const SessionDescription* sdesc,
 // Returns true if the |crypto|'s cipher_suite is not found in |filter|.
 static bool CryptoNotFound(const CryptoParams crypto,
                            const CryptoParamsVec* filter) {
-  if (filter == NULL) {
+  if (filter == nullptr) {
     return true;
   }
   for (CryptoParamsVec::const_iterator it = filter->begin();
@@ -947,7 +947,7 @@ static bool FindByUri(const RtpHeaderExtensions& extensions,
        it  != extensions.end(); ++it) {
     // We assume that all URIs are given in a canonical format.
     if (it->uri == ext_to_match.uri) {
-      if (found_extension != NULL) {
+      if (found_extension != nullptr) {
         *found_extension = *it;
       }
       return true;
@@ -982,7 +982,7 @@ static void FindRtpHdrExtsToOffer(
     RtpHeaderExtensions* all_extensions,
     UsedRtpHeaderExtensionIds* used_ids) {
   for (auto reference_extension : reference_extensions) {
-    if (!FindByUri(*offered_extensions, reference_extension, NULL)) {
+    if (!FindByUri(*offered_extensions, reference_extension, nullptr)) {
       webrtc::RtpExtension existing;
       if (FindByUri(*all_extensions, reference_extension, &existing)) {
         offered_extensions->push_back(existing);
@@ -1163,7 +1163,7 @@ static void SetMediaProtocol(bool secure_transport,
 static const TransportDescription* GetTransportDescription(
     const std::string& content_name,
     const SessionDescription* current_description) {
-  const TransportDescription* desc = NULL;
+  const TransportDescription* desc = nullptr;
   if (current_description) {
     const TransportInfo* info =
         current_description->GetTransportInfoByName(content_name);
@@ -1358,14 +1358,14 @@ SessionDescription* MediaSessionDescriptionFactory::CreateOffer(
         if (!AddAudioContentForOffer(options, current_description,
                                      audio_rtp_extensions, audio_codecs,
                                      &current_streams, offer.get())) {
-          return NULL;
+          return nullptr;
         }
         audio_added = true;
       } else if (IsMediaContentOfType(&*it, MEDIA_TYPE_VIDEO)) {
         if (!AddVideoContentForOffer(options, current_description,
                                      video_rtp_extensions, video_codecs,
                                      &current_streams, offer.get())) {
-          return NULL;
+          return nullptr;
         }
         video_added = true;
       } else if (IsMediaContentOfType(&*it, MEDIA_TYPE_DATA)) {
@@ -1377,7 +1377,7 @@ SessionDescription* MediaSessionDescriptionFactory::CreateOffer(
         if (!AddDataContentForOffer(options_copy, current_description,
                                     &data_codecs, &current_streams,
                                     offer.get())) {
-          return NULL;
+          return nullptr;
         }
         data_added = true;
       } else {
@@ -1391,18 +1391,18 @@ SessionDescription* MediaSessionDescriptionFactory::CreateOffer(
       !AddAudioContentForOffer(options, current_description,
                                audio_rtp_extensions, audio_codecs,
                                &current_streams, offer.get())) {
-    return NULL;
+    return nullptr;
   }
   if (!video_added && options.has_video() &&
       !AddVideoContentForOffer(options, current_description,
                                video_rtp_extensions, video_codecs,
                                &current_streams, offer.get())) {
-    return NULL;
+    return nullptr;
   }
   if (!data_added && options.has_data() &&
       !AddDataContentForOffer(options, current_description, &data_codecs,
                               &current_streams, offer.get())) {
-    return NULL;
+    return nullptr;
   }
 
   // Bundle the contents together, if we've been asked to do so, and update any
@@ -1416,11 +1416,11 @@ SessionDescription* MediaSessionDescriptionFactory::CreateOffer(
     offer->AddGroup(offer_bundle);
     if (!UpdateTransportInfoForBundle(offer_bundle, offer.get())) {
       LOG(LS_ERROR) << "CreateOffer failed to UpdateTransportInfoForBundle.";
-      return NULL;
+      return nullptr;
     }
     if (!UpdateCryptoParamsForBundle(offer_bundle, offer.get())) {
       LOG(LS_ERROR) << "CreateOffer failed to UpdateCryptoParamsForBundle.";
-      return NULL;
+      return nullptr;
     }
   }
 
@@ -1444,18 +1444,18 @@ SessionDescription* MediaSessionDescriptionFactory::CreateAnswer(
       if (IsMediaContentOfType(&*it, MEDIA_TYPE_AUDIO)) {
         if (!AddAudioContentForAnswer(offer, options, current_description,
                                   &current_streams, answer.get())) {
-          return NULL;
+          return nullptr;
         }
       } else if (IsMediaContentOfType(&*it, MEDIA_TYPE_VIDEO)) {
         if (!AddVideoContentForAnswer(offer, options, current_description,
                                       &current_streams, answer.get())) {
-          return NULL;
+          return nullptr;
         }
       } else {
         RTC_DCHECK(IsMediaContentOfType(&*it, MEDIA_TYPE_DATA));
         if (!AddDataContentForAnswer(offer, options, current_description,
                                      &current_streams, answer.get())) {
-          return NULL;
+          return nullptr;
         }
       }
     }
@@ -1479,12 +1479,12 @@ SessionDescription* MediaSessionDescriptionFactory::CreateAnswer(
       // as BUNDLE requires.
       if (!UpdateTransportInfoForBundle(answer_bundle, answer.get())) {
         LOG(LS_ERROR) << "CreateAnswer failed to UpdateTransportInfoForBundle.";
-        return NULL;
+        return nullptr;
       }
 
       if (!UpdateCryptoParamsForBundle(answer_bundle, answer.get())) {
         LOG(LS_ERROR) << "CreateAnswer failed to UpdateCryptoParamsForBundle.";
-        return NULL;
+        return nullptr;
       }
     }
   }
@@ -1621,8 +1621,9 @@ bool MediaSessionDescriptionFactory::AddTransportOffer(
       GetTransportDescription(content_name, current_desc);
   std::unique_ptr<TransportDescription> new_tdesc(
       transport_desc_factory_->CreateOffer(transport_options, current_tdesc));
-  bool ret = (new_tdesc.get() != NULL &&
-      offer_desc->AddTransportInfo(TransportInfo(content_name, *new_tdesc)));
+  bool ret =
+      (new_tdesc.get() != nullptr &&
+       offer_desc->AddTransportInfo(TransportInfo(content_name, *new_tdesc)));
   if (!ret) {
     LOG(LS_ERROR)
         << "Failed to AddTransportOffer, content name=" << content_name;
@@ -1636,7 +1637,7 @@ TransportDescription* MediaSessionDescriptionFactory::CreateTransportAnswer(
     const TransportOptions& transport_options,
     const SessionDescription* current_desc) const {
   if (!transport_desc_factory_)
-    return NULL;
+    return nullptr;
   const TransportDescription* offer_tdesc =
       GetTransportDescription(content_name, offer_desc);
   const TransportDescription* current_tdesc =
@@ -2080,7 +2081,8 @@ const ContentInfo* GetFirstDataContent(const SessionDescription* sdesc) {
 const MediaContentDescription* GetFirstMediaContentDescription(
     const SessionDescription* sdesc, MediaType media_type) {
   const ContentInfo* content = GetFirstMediaContent(sdesc, media_type);
-  const ContentDescription* description = content ? content->description : NULL;
+  const ContentDescription* description =
+      content ? content->description : nullptr;
   return static_cast<const MediaContentDescription*>(description);
 }
 
@@ -2153,7 +2155,7 @@ MediaContentDescription* GetFirstMediaContentDescription(
     SessionDescription* sdesc,
     MediaType media_type) {
   ContentInfo* content = GetFirstMediaContent(sdesc, media_type);
-  ContentDescription* description = content ? content->description : NULL;
+  ContentDescription* description = content ? content->description : nullptr;
   return static_cast<MediaContentDescription*>(description);
 }