Remove #define in c/b/ui/accelerator_table.cc (#36599)

* Remove #define in c/b/ui/accelerator_table.cc

Replaces #define macro with plaster + chromium_src override.
plaster will rename GetAcceleratorList() to GetAcceleratorList_ChromiumImpl()
so that we can have our own implementation of GetAcceleratorList().

chromium_src/chrome/browser/ui/accelerator_table.cc

@@ -3,17 +3,12 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-#include "chrome/browser/ui/accelerator_table.h"
-
 #include "base/containers/extend.h"
 #include "brave/app/brave_command_ids.h"
 #include "brave/components/commander/common/buildflags/buildflags.h"
 #include "build/build_config.h"
-#include "chrome/browser/ui/ui_features.h"
 
-#define GetAcceleratorList GetAcceleratorList_ChromiumImpl
 #include <chrome/browser/ui/accelerator_table.cc>
-#undef GetAcceleratorList
 
 namespace {
 
@@ -41,6 +36,10 @@ constexpr AcceleratorMapping kBraveAcceleratorMap[] = {
 
 }  // namespace
 
+// Our own version of GetAcceleratorList(). This removes the upstream
+// accelerator for new split tab on Windows and Linux, as it conflicts with our
+// existing Tor shortcut (see `kBraveAcceleratorMap`) and adds our own
+// accelerators.
 std::vector<AcceleratorMapping> GetAcceleratorList() {
   std::vector<AcceleratorMapping> accelerator_list(
       GetAcceleratorList_ChromiumImpl());

patches/chrome-browser-ui-accelerator_table.cc.patch

@@ -0,0 +1,13 @@
+diff --git a/chrome/browser/ui/accelerator_table.cc b/chrome/browser/ui/accelerator_table.cc
+index 51837acdf5a13e6ae75e163943d977c85c6c7fd1..234c5d6a24808f0734411e8398f179f1283060b2 100644
+--- a/chrome/browser/ui/accelerator_table.cc
++++ b/chrome/browser/ui/accelerator_table.cc
+@@ -305,7 +305,7 @@ std::vector<AcceleratorMapping>* GetAcceleratorsPointer() {
+ 
+ }  // namespace
+ 
+-std::vector<AcceleratorMapping> GetAcceleratorList() {
++std::vector<AcceleratorMapping> GetAcceleratorList_ChromiumImpl() {
+   std::vector<AcceleratorMapping>* accelerators = GetAcceleratorsPointer();
+ 
+   if (accelerators->empty()) {

rewrite/chrome/browser/ui/accelerator_table.cc.yaml

@@ -0,0 +1,11 @@
+# Copyright (c) 2026 The Brave Authors. All rights reserved.
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at https://mozilla.org/MPL/2.0/.
+
+substitutions:
+  - description: |-
+      Rename GetAcceleratorList() to GetAcceleratorList_ChromiumImpl() so that
+      we can have our own implementation of GetAcceleratorList().
+    re_pattern: '(std::vector<AcceleratorMapping>\ GetAcceleratorList)(\(\)\ {)'
+    replace: '\1_ChromiumImpl\2'