diff --git a/third_party/inspector_protocol/README.v8 b/third_party/inspector_protocol/README.v8
index 5a6ca6eea9..c531d91925 100644
--- a/third_party/inspector_protocol/README.v8
+++ b/third_party/inspector_protocol/README.v8
@@ -2,7 +2,7 @@ Name: inspector protocol
 Short Name: inspector_protocol
 URL: https://chromium.googlesource.com/deps/inspector_protocol/
 Version: 0
-Revision: 75c465e8d425f2e0b5297245c7eb058411af493a
+Revision: 1f2492b6768e8620ece36a784c8ecd7ae7091610
 License: BSD
 License File: LICENSE
 Security Critical: no
diff --git a/third_party/inspector_protocol/code_generator.py b/third_party/inspector_protocol/code_generator.py
index 073dba29fe..77d13ef710 100755
--- a/third_party/inspector_protocol/code_generator.py
+++ b/third_party/inspector_protocol/code_generator.py
@@ -655,7 +655,6 @@ def main():
     # Note these should be sorted in the right order.
     # TODO(dgozman): sort them programmatically based on commented includes.
     protocol_h_templates = [
-      "ErrorSupport_h.template",
       "Values_h.template",
       "Object_h.template",
       "ValueConversions_h.template",
@@ -664,7 +663,6 @@ def main():
 
     protocol_cpp_templates = [
       "Protocol_cpp.template",
-      "ErrorSupport_cpp.template",
       "Values_cpp.template",
       "Object_cpp.template",
       "DispatcherBase_cpp.template",
diff --git a/third_party/inspector_protocol/inspector_protocol.gni b/third_party/inspector_protocol/inspector_protocol.gni
index 0b66f8dbd0..fa7cb419f5 100644
--- a/third_party/inspector_protocol/inspector_protocol.gni
+++ b/third_party/inspector_protocol/inspector_protocol.gni
@@ -35,8 +35,6 @@ template("inspector_protocol_generate") {
       "$inspector_protocol_dir/lib/base_string_adapter_h.template",
       "$inspector_protocol_dir/lib/DispatcherBase_cpp.template",
       "$inspector_protocol_dir/lib/DispatcherBase_h.template",
-      "$inspector_protocol_dir/lib/ErrorSupport_cpp.template",
-      "$inspector_protocol_dir/lib/ErrorSupport_h.template",
       "$inspector_protocol_dir/lib/Forward_h.template",
       "$inspector_protocol_dir/lib/FrontendChannel_h.template",
       "$inspector_protocol_dir/lib/Object_cpp.template",
diff --git a/third_party/inspector_protocol/lib/ErrorSupport_cpp.template b/third_party/inspector_protocol/lib/ErrorSupport_cpp.template
deleted file mode 100644
index 08b5340120..0000000000
--- a/third_party/inspector_protocol/lib/ErrorSupport_cpp.template
+++ /dev/null
@@ -1,7 +0,0 @@
-// This file is generated by ErrorSupport_cpp.template.
-
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// TODO(johannes): Remove this template.
diff --git a/third_party/inspector_protocol/lib/ErrorSupport_h.template b/third_party/inspector_protocol/lib/ErrorSupport_h.template
deleted file mode 100644
index 4d2f39e3a4..0000000000
--- a/third_party/inspector_protocol/lib/ErrorSupport_h.template
+++ /dev/null
@@ -1,7 +0,0 @@
-// This file is generated by ErrorSupport_h.template.
-
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// TODO(johannes): Remove this template.