chore: remove native_mate (Part 2) (#20106)

* add notice to files being removed

* add gin version of function_template.h

* rename callback.h to avoid confliction

* add gin version of callback_converter

* add gin converter for OnceCallback

* remove callback_converter_gin_adapter.h

* remove gin_util.h and gin_utils.h

* fix lint warning

* add helper for setting methods

shell/common/native_mate_converters/callback_converter_deprecated.cc

@@ -2,7 +2,7 @@
 // Use of this source code is governed by the MIT license that can be
 // found in the LICENSE file.
 
-#include "shell/common/native_mate_converters/callback.h"
+#include "shell/common/native_mate_converters/callback_converter_deprecated.h"
 #include "base/stl_util.h"
 #include "content/public/browser/browser_thread.h"
 

shell/common/native_mate_converters/callback_converter_deprecated.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by the MIT license that can be
 // found in the LICENSE file.
 
-#ifndef SHELL_COMMON_NATIVE_MATE_CONVERTERS_CALLBACK_H_
-#define SHELL_COMMON_NATIVE_MATE_CONVERTERS_CALLBACK_H_
+#ifndef SHELL_COMMON_NATIVE_MATE_CONVERTERS_CALLBACK_CONVERTER_DEPRECATED_H_
+#define SHELL_COMMON_NATIVE_MATE_CONVERTERS_CALLBACK_CONVERTER_DEPRECATED_H_
 
 #include <utility>
 #include <vector>
@@ -16,6 +16,10 @@
 #include "native_mate/scoped_persistent.h"
 #include "shell/common/api/locker.h"
 
+// =============================== NOTICE ===============================
+// Do not add code here, native_mate is being removed. Any new code
+// should use gin instead.
+
 namespace mate {
 
 namespace internal {
@@ -178,4 +182,4 @@ v8::Local<v8::Value> CallbackToV8(v8::Isolate* isolate,
 
 }  // namespace mate
 
-#endif  // SHELL_COMMON_NATIVE_MATE_CONVERTERS_CALLBACK_H_
+#endif  // SHELL_COMMON_NATIVE_MATE_CONVERTERS_CALLBACK_CONVERTER_DEPRECATED_H_

shell/common/native_mate_converters/content_converter.cc

@@ -13,7 +13,7 @@
 #include "shell/browser/api/atom_api_web_contents.h"
 #include "shell/browser/web_contents_permission_helper.h"
 #include "shell/common/native_mate_converters/blink_converter.h"
-#include "shell/common/native_mate_converters/callback.h"
+#include "shell/common/native_mate_converters/callback_converter_deprecated.h"
 #include "shell/common/native_mate_converters/gurl_converter.h"
 #include "shell/common/native_mate_converters/string16_converter.h"
 #include "shell/common/native_mate_converters/ui_base_types_converter.h"

shell/common/native_mate_converters/once_callback.h

@@ -7,7 +7,7 @@
 
 #include <utility>
 
-#include "shell/common/native_mate_converters/callback.h"
+#include "shell/common/native_mate_converters/callback_converter_deprecated.h"
 
 namespace mate {