Fixing bad use of std::sort in test method.

webrtc/ortc/testrtpparameters.cc

Index: webrtc/ortc/testrtpparameters.cc
diff --git a/webrtc/ortc/testrtpparameters.cc b/webrtc/ortc/testrtpparameters.cc
index de2e7d5bd20bc6ccee8f70db61b769f6e664ac14..5d1cdf96350dcf1f858b2572a11fab87f8ca0c28 100644
--- a/webrtc/ortc/testrtpparameters.cc
+++ b/webrtc/ortc/testrtpparameters.cc
@@ -163,11 +163,13 @@ RtpParameters MakeFullAudioParameters(int preferred_payload_type) {
   // "codec_payload_type" isn't implemented, so we need to reorder codecs to
   // cause one to be used.
   // TODO(deadbeef): Remove this when it becomes unnecessary.
-  std::sort(parameters.codecs.begin(), parameters.codecs.end(),
-            [preferred_payload_type](const RtpCodecParameters& a,
-                                     const RtpCodecParameters& b) {
-              return a.payload_type == preferred_payload_type;
-            });
+  auto it = std::find_if(parameters.codecs.begin(), parameters.codecs.end(),
+                         [preferred_payload_type](const RtpCodecParameters& p) {
+                           return p.payload_type == preferred_payload_type;
+                         });
+  RtpCodecParameters preferred = *it;
+  parameters.codecs.erase(it);
+  parameters.codecs.insert(parameters.codecs.begin(), preferred);
 
   // Intentionally leave out SSRC so one's chosen automatically.
   RtpEncodingParameters encoding;
@@ -270,11 +272,13 @@ RtpParameters MakeFullVideoParameters(int preferred_payload_type) {
   // "codec_payload_type" isn't implemented, so we need to reorder codecs to
   // cause one to be used.
   // TODO(deadbeef): Remove this when it becomes unnecessary.
-  std::sort(parameters.codecs.begin(), parameters.codecs.end(),
-            [preferred_payload_type](const RtpCodecParameters& a,
-                                     const RtpCodecParameters& b) {
-              return a.payload_type == preferred_payload_type;
-            });
+  auto it = std::find_if(parameters.codecs.begin(), parameters.codecs.end(),
+                         [preferred_payload_type](const RtpCodecParameters& p) {
+                           return p.payload_type == preferred_payload_type;
+                         });
+  RtpCodecParameters preferred = *it;
+  parameters.codecs.erase(it);
+  parameters.codecs.insert(parameters.codecs.begin(), preferred);
 
   // Intentionally leave out SSRC so one's chosen automatically.
   RtpEncodingParameters encoding;