chrome: Add ability to handle chrome menu/keyboard commands (fixes issue #3280)

This change adds a CefCommandHandler::OnChromeCommand callback for optionally
handling Chrome commands triggered via menus or keyboard shortcuts. Supported
command IDs are listed in a new cef_command_ids.h header file.

To test: Run `cefclient --enable-chrome-runtime --hide-controls`. Most commands
will blocked and removed from context menus.

libcef_dll/cpptoc/client_cpptoc.cc

@@ -9,11 +9,12 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=5c9e95dca457958e3b49c85b9fd39b36bf555d4e$
+// $hash=b299c22d4f97022efefefeb17a7848b0b44d4af3$
 //
 
 #include "libcef_dll/cpptoc/client_cpptoc.h"
 #include "libcef_dll/cpptoc/audio_handler_cpptoc.h"
+#include "libcef_dll/cpptoc/command_handler_cpptoc.h"
 #include "libcef_dll/cpptoc/context_menu_handler_cpptoc.h"
 #include "libcef_dll/cpptoc/dialog_handler_cpptoc.h"
 #include "libcef_dll/cpptoc/display_handler_cpptoc.h"
@@ -53,6 +54,22 @@ client_get_audio_handler(struct _cef_client_t* self) {
   return CefAudioHandlerCppToC::Wrap(_retval);
 }
 
+struct _cef_command_handler_t* CEF_CALLBACK
+client_get_command_handler(struct _cef_client_t* self) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return NULL;
+
+  // Execute
+  CefRefPtr<CefCommandHandler> _retval =
+      CefClientCppToC::Get(self)->GetCommandHandler();
+
+  // Return type: refptr_same
+  return CefCommandHandlerCppToC::Wrap(_retval);
+}
+
 struct _cef_context_menu_handler_t* CEF_CALLBACK
 client_get_context_menu_handler(struct _cef_client_t* self) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
@@ -332,6 +349,7 @@ client_on_process_message_received(struct _cef_client_t* self,
 
 CefClientCppToC::CefClientCppToC() {
   GetStruct()->get_audio_handler = client_get_audio_handler;
+  GetStruct()->get_command_handler = client_get_command_handler;
   GetStruct()->get_context_menu_handler = client_get_context_menu_handler;
   GetStruct()->get_dialog_handler = client_get_dialog_handler;
   GetStruct()->get_display_handler = client_get_display_handler;

libcef_dll/cpptoc/command_handler_cpptoc.cc

@@ -0,0 +1,76 @@
+// Copyright (c) 2022 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+//
+// ---------------------------------------------------------------------------
+//
+// This file was generated by the CEF translator tool. If making changes by
+// hand only do so within the body of existing method and function
+// implementations. See the translator.README.txt file in the tools directory
+// for more information.
+//
+// $hash=929bc6804bc4beb1601ee44f3300a42ecc917c74$
+//
+
+#include "libcef_dll/cpptoc/command_handler_cpptoc.h"
+#include "libcef_dll/ctocpp/browser_ctocpp.h"
+#include "libcef_dll/shutdown_checker.h"
+
+namespace {
+
+// MEMBER FUNCTIONS - Body may be edited by hand.
+
+int CEF_CALLBACK
+command_handler_on_chrome_command(struct _cef_command_handler_t* self,
+                                  cef_browser_t* browser,
+                                  int command_id,
+                                  cef_window_open_disposition_t disposition) {
+  shutdown_checker::AssertNotShutdown();
+
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return 0;
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser);
+  if (!browser)
+    return 0;
+
+  // Execute
+  bool _retval = CefCommandHandlerCppToC::Get(self)->OnChromeCommand(
+      CefBrowserCToCpp::Wrap(browser), command_id, disposition);
+
+  // Return type: bool
+  return _retval;
+}
+
+}  // namespace
+
+// CONSTRUCTOR - Do not edit by hand.
+
+CefCommandHandlerCppToC::CefCommandHandlerCppToC() {
+  GetStruct()->on_chrome_command = command_handler_on_chrome_command;
+}
+
+// DESTRUCTOR - Do not edit by hand.
+
+CefCommandHandlerCppToC::~CefCommandHandlerCppToC() {
+  shutdown_checker::AssertNotShutdown();
+}
+
+template <>
+CefRefPtr<CefCommandHandler> CefCppToCRefCounted<
+    CefCommandHandlerCppToC,
+    CefCommandHandler,
+    cef_command_handler_t>::UnwrapDerived(CefWrapperType type,
+                                          cef_command_handler_t* s) {
+  NOTREACHED() << "Unexpected class type: " << type;
+  return nullptr;
+}
+
+template <>
+CefWrapperType CefCppToCRefCounted<CefCommandHandlerCppToC,
+                                   CefCommandHandler,
+                                   cef_command_handler_t>::kWrapperType =
+    WT_COMMAND_HANDLER;

libcef_dll/cpptoc/command_handler_cpptoc.h

@@ -0,0 +1,38 @@
+// Copyright (c) 2022 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+//
+// ---------------------------------------------------------------------------
+//
+// This file was generated by the CEF translator tool. If making changes by
+// hand only do so within the body of existing method and function
+// implementations. See the translator.README.txt file in the tools directory
+// for more information.
+//
+// $hash=85e5de7b82a22ab4738de3a6a2bb141eb5c79579$
+//
+
+#ifndef CEF_LIBCEF_DLL_CPPTOC_COMMAND_HANDLER_CPPTOC_H_
+#define CEF_LIBCEF_DLL_CPPTOC_COMMAND_HANDLER_CPPTOC_H_
+#pragma once
+
+#if !defined(WRAPPING_CEF_SHARED)
+#error This file can be included wrapper-side only
+#endif
+
+#include "include/capi/cef_command_handler_capi.h"
+#include "include/cef_command_handler.h"
+#include "libcef_dll/cpptoc/cpptoc_ref_counted.h"
+
+// Wrap a C++ class with a C structure.
+// This class may be instantiated and accessed wrapper-side only.
+class CefCommandHandlerCppToC
+    : public CefCppToCRefCounted<CefCommandHandlerCppToC,
+                                 CefCommandHandler,
+                                 cef_command_handler_t> {
+ public:
+  CefCommandHandlerCppToC();
+  virtual ~CefCommandHandlerCppToC();
+};
+
+#endif  // CEF_LIBCEF_DLL_CPPTOC_COMMAND_HANDLER_CPPTOC_H_