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/ctocpp/client_ctocpp.cc

@@ -9,7 +9,7 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=f31f5010a3c5c4624b93d994b6fce1e795eeac93$
+// $hash=8e158f3ea54211b95f0b716b1eeec2ff475f1245$
 //
 
 #include "libcef_dll/ctocpp/client_ctocpp.h"
@@ -17,6 +17,7 @@
 #include "libcef_dll/cpptoc/frame_cpptoc.h"
 #include "libcef_dll/cpptoc/process_message_cpptoc.h"
 #include "libcef_dll/ctocpp/audio_handler_ctocpp.h"
+#include "libcef_dll/ctocpp/command_handler_ctocpp.h"
 #include "libcef_dll/ctocpp/context_menu_handler_ctocpp.h"
 #include "libcef_dll/ctocpp/dialog_handler_ctocpp.h"
 #include "libcef_dll/ctocpp/display_handler_ctocpp.h"
@@ -50,6 +51,21 @@ CefRefPtr<CefAudioHandler> CefClientCToCpp::GetAudioHandler() {
   return CefAudioHandlerCToCpp::Wrap(_retval);
 }
 
+NO_SANITIZE("cfi-icall")
+CefRefPtr<CefCommandHandler> CefClientCToCpp::GetCommandHandler() {
+  cef_client_t* _struct = GetStruct();
+  if (CEF_MEMBER_MISSING(_struct, get_command_handler))
+    return nullptr;
+
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  cef_command_handler_t* _retval = _struct->get_command_handler(_struct);
+
+  // Return type: refptr_same
+  return CefCommandHandlerCToCpp::Wrap(_retval);
+}
+
 NO_SANITIZE("cfi-icall")
 CefRefPtr<CefContextMenuHandler> CefClientCToCpp::GetContextMenuHandler() {
   cef_client_t* _struct = GetStruct();

libcef_dll/ctocpp/client_ctocpp.h

@@ -9,7 +9,7 @@
 // implementations. See the translator.README.txt file in the tools directory
 // for more information.
 //
-// $hash=c4370b0b3a14c9739b5a639eda06c286f6981e10$
+// $hash=69f82ee575779deaf1d3581dbedcf8aa75f35710$
 //
 
 #ifndef CEF_LIBCEF_DLL_CTOCPP_CLIENT_CTOCPP_H_
@@ -34,6 +34,7 @@ class CefClientCToCpp
 
   // CefClient methods.
   CefRefPtr<CefAudioHandler> GetAudioHandler() override;
+  CefRefPtr<CefCommandHandler> GetCommandHandler() override;
   CefRefPtr<CefContextMenuHandler> GetContextMenuHandler() override;
   CefRefPtr<CefDialogHandler> GetDialogHandler() override;
   CefRefPtr<CefDisplayHandler> GetDisplayHandler() override;

libcef_dll/ctocpp/command_handler_ctocpp.cc

@@ -0,0 +1,71 @@
+// 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.
+//
+// $hash=431d97965f00a504f09790fd524ee23f69f16a82$
+//
+
+#include "libcef_dll/ctocpp/command_handler_ctocpp.h"
+#include "libcef_dll/cpptoc/browser_cpptoc.h"
+#include "libcef_dll/shutdown_checker.h"
+
+// VIRTUAL METHODS - Body may be edited by hand.
+
+NO_SANITIZE("cfi-icall")
+bool CefCommandHandlerCToCpp::OnChromeCommand(
+    CefRefPtr<CefBrowser> browser,
+    int command_id,
+    cef_window_open_disposition_t disposition) {
+  shutdown_checker::AssertNotShutdown();
+
+  cef_command_handler_t* _struct = GetStruct();
+  if (CEF_MEMBER_MISSING(_struct, on_chrome_command))
+    return false;
+
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser.get());
+  if (!browser.get())
+    return false;
+
+  // Execute
+  int _retval = _struct->on_chrome_command(
+      _struct, CefBrowserCppToC::Wrap(browser), command_id, disposition);
+
+  // Return type: bool
+  return _retval ? true : false;
+}
+
+// CONSTRUCTOR - Do not edit by hand.
+
+CefCommandHandlerCToCpp::CefCommandHandlerCToCpp() {}
+
+// DESTRUCTOR - Do not edit by hand.
+
+CefCommandHandlerCToCpp::~CefCommandHandlerCToCpp() {
+  shutdown_checker::AssertNotShutdown();
+}
+
+template <>
+cef_command_handler_t* CefCToCppRefCounted<
+    CefCommandHandlerCToCpp,
+    CefCommandHandler,
+    cef_command_handler_t>::UnwrapDerived(CefWrapperType type,
+                                          CefCommandHandler* c) {
+  NOTREACHED() << "Unexpected class type: " << type;
+  return nullptr;
+}
+
+template <>
+CefWrapperType CefCToCppRefCounted<CefCommandHandlerCToCpp,
+                                   CefCommandHandler,
+                                   cef_command_handler_t>::kWrapperType =
+    WT_COMMAND_HANDLER;

libcef_dll/ctocpp/command_handler_ctocpp.h

@@ -0,0 +1,43 @@
+// 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.
+//
+// $hash=986b761d9c3bca7980b4144bb0802a9eafff9e0e$
+//
+
+#ifndef CEF_LIBCEF_DLL_CTOCPP_COMMAND_HANDLER_CTOCPP_H_
+#define CEF_LIBCEF_DLL_CTOCPP_COMMAND_HANDLER_CTOCPP_H_
+#pragma once
+
+#if !defined(BUILDING_CEF_SHARED)
+#error This file can be included DLL-side only
+#endif
+
+#include "include/capi/cef_command_handler_capi.h"
+#include "include/cef_command_handler.h"
+#include "libcef_dll/ctocpp/ctocpp_ref_counted.h"
+
+// Wrap a C structure with a C++ class.
+// This class may be instantiated and accessed DLL-side only.
+class CefCommandHandlerCToCpp
+    : public CefCToCppRefCounted<CefCommandHandlerCToCpp,
+                                 CefCommandHandler,
+                                 cef_command_handler_t> {
+ public:
+  CefCommandHandlerCToCpp();
+  virtual ~CefCommandHandlerCToCpp();
+
+  // CefCommandHandler methods.
+  bool OnChromeCommand(CefRefPtr<CefBrowser> browser,
+                       int command_id,
+                       cef_window_open_disposition_t disposition) override;
+};
+
+#endif  // CEF_LIBCEF_DLL_CTOCPP_COMMAND_HANDLER_CTOCPP_H_