diff --git a/inputfiles/patches/webrtc-encoded-transform.kdl b/inputfiles/patches/webrtc-encoded-transform.kdl
new file mode 100644
index 000000000..032ae777e
--- /dev/null
+++ b/inputfiles/patches/webrtc-encoded-transform.kdl
@@ -0,0 +1,11 @@
+removals {
+  dictionary RTCEncodedAudioFrameMetadata {
+    member audioLevel // No implementation as of 2025-05
+  }
+
+  dictionary RTCEncodedFrameMetadata {
+    member captureTime // Blink only as of 2025-05
+    member receiveTime // Blink only as of 2025-05
+    member senderCaptureTimeOffset // Blink only as of 2025-05
+  }
+}
diff --git a/inputfiles/patches/webrtc-stats.kdl b/inputfiles/patches/webrtc-stats.kdl
new file mode 100644
index 000000000..7e6da8c34
--- /dev/null
+++ b/inputfiles/patches/webrtc-stats.kdl
@@ -0,0 +1,32 @@
+removals {
+  dictionary RTCInboundRtpStreamStats {
+    // https://searchfox.org/mozilla-central/source/dom/webidl/RTCStatsReport.webidl
+    // https://searchfox.org/wubkat/source/Source/WebCore/Modules/mediastream/RTCStatsReport.idl
+    // https://source.chromium.org/chromium/chromium/src/+/main:third_party/webrtc/stats/rtcstats_objects.cc
+    member corruptionMeasurements // Blink only as of 2024-11
+    member powerEfficientDecoder // Blink only as of 2024-11
+    member totalCorruptionProbability // Blink only as of 2024-11
+    member totalSquaredCorruptionProbability // Blink only as of 2024-11
+  }
+
+  dictionary RTCOutboundRtpStreamStats {
+    member powerEfficientEncoder // Blink only as of 2025-07
+    member encoderImplementation // Blink only as of 2025-07
+    member encodingIndex // Blink only as of 2025-07
+    member packetsSentWithEct1 // No implementation as of 2025-08
+    member psnrMeasurements // No implementation as of 2025-07
+    member psnrSum // No implementation as of 2025-07
+  }
+
+  dictionary RTCReceivedRtpStreamStats {
+    member packetsReceivedWithCe // No implementation as of 2025-04
+    member packetsReceivedWithEct1 // No implementation as of 2025-04
+    member packetsReportedAsLost // No implementation as of 2025-04
+    member packetsReportedAsLostButRecovered // No implementation as of 2025-04
+  }
+
+  dictionary RTCTransportStats {
+    member ccfbMessagesReceived // No implementation as of 2025-04
+    member ccfbMessagesSent // No implementation as of 2025-04
+  }
+}
diff --git a/inputfiles/patches/webrtc.kdl b/inputfiles/patches/webrtc.kdl
new file mode 100644
index 000000000..64fa562f6
--- /dev/null
+++ b/inputfiles/patches/webrtc.kdl
@@ -0,0 +1,23 @@
+removals {
+  dictionary RTCConfiguration {
+    member peerIdentity // Gecko only as of 2024-11
+  }
+
+  dictionary RTCDataChannelInit {
+    member priority // Blink experimental only as of 2024-11
+  }
+
+  dictionary RTCLocalIceCandidateInit {
+    member relayProtocol // Blink only as of 2025-04
+    member url // Blink only as of 2025-04
+  }
+
+  dictionary RTCPeerConnectionIceEventInit {
+    member url // WebKit only as of 2025-04
+  }
+  
+  dictionary RTCRtpEncodingParameters {
+    member codec // Blink only as of 2024-11
+    member scalabilityMode // Blink only as of 2024-11
+  }
+}
diff --git a/inputfiles/removedTypes.jsonc b/inputfiles/removedTypes.jsonc
index 06cd05c7d..158f5ba31 100644
--- a/inputfiles/removedTypes.jsonc
+++ b/inputfiles/removedTypes.jsonc
@@ -365,102 +365,6 @@
                     }
                 }
             },
-            "RTCEncodedAudioFrameMetadata": {
-                "members": {
-                    "member": {
-                        "audioLevel": null // No implementation as of 2025-05
-                    }
-                }
-            },
-            "RTCEncodedFrameMetadata": {
-                "members": {
-                    "member": {
-                        "captureTime": null, // Blink only as of 2025-05
-                        "receiveTime": null, // Blink only as of 2025-05
-                        "senderCaptureTimeOffset": null // Blink only as of 2025-05
-                    }
-                }
-            },
-            "RTCConfiguration": {
-                "members": {
-                    "member": {
-                        "peerIdentity": null // Gecko only as of 2024-11
-                    }
-                }
-            },
-            "RTCDataChannelInit": {
-                "members": {
-                    "member": {
-                        "priority": null // Blink experimental only as of 2024-11
-                    }
-                }
-            },
-            "RTCInboundRtpStreamStats": {
-                "members": {
-                    "member": {
-                        // https://searchfox.org/mozilla-central/source/dom/webidl/RTCStatsReport.webidl
-                        // https://searchfox.org/wubkat/source/Source/WebCore/Modules/mediastream/RTCStatsReport.idl
-                        // https://source.chromium.org/chromium/chromium/src/+/main:third_party/webrtc/stats/rtcstats_objects.cc
-                        "corruptionMeasurements": null, // Blink only as of 2024-11
-                        "powerEfficientDecoder": null, // Blink only as of 2024-11
-                        "totalCorruptionProbability": null, // Blink only as of 2024-11
-                        "totalSquaredCorruptionProbability": null // Blink only as of 2024-11
-                    }
-                }
-            },
-            "RTCLocalIceCandidateInit": {
-                "members": {
-                    "member": {
-                        "relayProtocol": null, // Blink only as of 2025-04
-                        "url": null // Blink only as of 2025-04
-                    }
-                }
-            },
-            "RTCOutboundRtpStreamStats": {
-                "members": {
-                    "member": {
-                        "powerEfficientEncoder": null, // Blink only as of 2025-07
-                        "encoderImplementation": null, // Blink only as of 2025-07
-                        "encodingIndex": null, // Blink only as of 2025-07
-                        "packetsSentWithEct1": null, // No implementation as of 2025-08
-                        "psnrMeasurements": null, // No implementation as of 2025-07
-                        "psnrSum": null // No implementation as of 2025-07
-                    }
-                }
-            },
-            "RTCReceivedRtpStreamStats": {
-                "members": {
-                    "member": {
-                        "packetsReceivedWithCe": null, // No implementation as of 2025-04
-                        "packetsReceivedWithEct1": null, // No implementation as of 2025-04
-                        "packetsReportedAsLost": null, // No implementation as of 2025-04
-                        "packetsReportedAsLostButRecovered": null // No implementation as of 2025-04
-                    }
-                }
-            },
-            "RTCPeerConnectionIceEventInit": {
-                "members": {
-                    "member": {
-                        "url": null // WebKit only as of 2025-04
-                    }
-                }
-            },
-            "RTCRtpEncodingParameters": {
-                "members": {
-                    "member": {
-                        "codec": null, // Blink only as of 2024-11
-                        "scalabilityMode": null // Blink only as of 2024-11
-                    }
-                }
-            },
-            "RTCTransportStats": {
-                "members": {
-                    "member": {
-                        "ccfbMessagesReceived": null, // No implementation as of 2025-04
-                        "ccfbMessagesSent": null // No implementation as of 2025-04
-                    }
-                }
-            },
             "ScrollIntoViewOptions": {
                 "members": {
                     "member": {