chore: remove unused KeyWeakMap JS bindings (#43144)

The last three pieces of code that used it were removed in:

- Oct 2020 (8df4faa8 #25711)
- Jun 2020 (e1e73fa5 #24115)
- Jun 2020 (c0182bca #24116).

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Charles Kerr <charles@charleskerr.com>

filenames.gni

@@ -548,7 +548,6 @@ filenames = {
     "shell/common/api/electron_api_clipboard.h",
     "shell/common/api/electron_api_command_line.cc",
     "shell/common/api/electron_api_environment.cc",
-    "shell/common/api/electron_api_key_weak_map.h",
     "shell/common/api/electron_api_native_image.cc",
     "shell/common/api/electron_api_native_image.h",
     "shell/common/api/electron_api_net.cc",

shell/common/api/electron_api_key_weak_map.h

@@ -1,62 +0,0 @@
-// Copyright (c) 2016 GitHub, Inc.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-#ifndef ELECTRON_SHELL_COMMON_API_ELECTRON_API_KEY_WEAK_MAP_H_
-#define ELECTRON_SHELL_COMMON_API_ELECTRON_API_KEY_WEAK_MAP_H_
-
-#include "gin/handle.h"
-#include "shell/common/gin_converters/std_converter.h"
-#include "shell/common/gin_helper/object_template_builder.h"
-#include "shell/common/gin_helper/wrappable.h"
-#include "shell/common/key_weak_map.h"
-
-namespace electron::api {
-
-template <typename K>
-class KeyWeakMap : public gin_helper::Wrappable<KeyWeakMap<K>> {
- public:
-  static gin::Handle<KeyWeakMap<K>> Create(v8::Isolate* isolate) {
-    return gin::CreateHandle(isolate, new KeyWeakMap<K>(isolate));
-  }
-
-  static void BuildPrototype(v8::Isolate* isolate,
-                             v8::Local<v8::FunctionTemplate> prototype) {
-    prototype->SetClassName(gin::StringToV8(isolate, "KeyWeakMap"));
-    gin_helper::ObjectTemplateBuilder(isolate, prototype->PrototypeTemplate())
-        .SetMethod("set", &KeyWeakMap<K>::Set)
-        .SetMethod("get", &KeyWeakMap<K>::Get)
-        .SetMethod("has", &KeyWeakMap<K>::Has)
-        .SetMethod("remove", &KeyWeakMap<K>::Remove);
-  }
-
-  // disable copy
-  KeyWeakMap(const KeyWeakMap&) = delete;
-  KeyWeakMap& operator=(const KeyWeakMap&) = delete;
-
- protected:
-  explicit KeyWeakMap(v8::Isolate* isolate) {
-    gin_helper::Wrappable<KeyWeakMap<K>>::Init(isolate);
-  }
-  ~KeyWeakMap() override {}
-
- private:
-  // API for KeyWeakMap.
-  void Set(v8::Isolate* isolate, const K& key, v8::Local<v8::Object> object) {
-    key_weak_map_.Set(isolate, key, object);
-  }
-
-  v8::Local<v8::Object> Get(v8::Isolate* isolate, const K& key) {
-    return key_weak_map_.Get(isolate, key).ToLocalChecked();
-  }
-
-  bool Has(const K& key) { return key_weak_map_.Has(key); }
-
-  void Remove(const K& key) { key_weak_map_.Remove(key); }
-
-  electron::KeyWeakMap<K> key_weak_map_;
-};
-
-}  // namespace electron::api
-
-#endif  // ELECTRON_SHELL_COMMON_API_ELECTRON_API_KEY_WEAK_MAP_H_

shell/common/api/electron_api_v8_util.cc

@@ -7,7 +7,6 @@
 
 #include "base/run_loop.h"
 #include "electron/buildflags/buildflags.h"
-#include "shell/common/api/electron_api_key_weak_map.h"
 #include "shell/common/gin_converters/content_converter.h"
 #include "shell/common/gin_converters/gurl_converter.h"
 #include "shell/common/gin_converters/std_converter.h"