cef/libcef/browser/chrome/chrome_content_browser_client_cef.cc
Marshall Greenblatt 1174994211 Add initial chrome runtime support (see issue #2969)
Running `cefsimple --enable-chrome-runtime` will create and run a
Chrome browser window using the CEF app methods, and call
CefApp::OnContextInitialized as expected. CEF task methods also
work as expected in the main process. No browser-related methods or
callbacks are currently supported for the Chrome window, and the
application will exit when the last Chrome window closes.

The Chrome runtime requires resources.pak, chrome_100_percent.pak
and chrome_200_percent.pak files which were not previously built
with CEF. It shares the existing locales pak files which have been
updated to include additional Chrome-specific strings.

On Linux, the Chrome runtime requires GTK so use_gtk=true must be
specified via GN_DEFINES when building.

This change also refactors the CEF runtime, which can be tested in
the various supported modes by running:
$ cefclient
$ cefclient --multi-threaded-message-loop
$ cefclient --external-message-pump
2020-06-29 16:17:23 -04:00

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// Copyright 2020 The Chromium Embedded Framework Authors.
// Portions copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "libcef/browser/chrome/chrome_content_browser_client_cef.h"
#include "libcef/browser/chrome/chrome_browser_main_extra_parts_cef.h"
#include "libcef/common/cef_switches.h"
#include "base/command_line.h"
#include "chrome/browser/chrome_browser_main.h"
ChromeContentBrowserClientCef::ChromeContentBrowserClientCef(
StartupData* startup_data)
: ChromeContentBrowserClient(startup_data) {}
ChromeContentBrowserClientCef::~ChromeContentBrowserClientCef() = default;
std::unique_ptr<content::BrowserMainParts>
ChromeContentBrowserClientCef::CreateBrowserMainParts(
const content::MainFunctionParams& parameters) {
auto main_parts =
ChromeContentBrowserClient::CreateBrowserMainParts(parameters);
browser_main_parts_ = new ChromeBrowserMainExtraPartsCef;
static_cast<ChromeBrowserMainParts*>(main_parts.get())
->AddParts(browser_main_parts_);
return main_parts;
}
void ChromeContentBrowserClientCef::AppendExtraCommandLineSwitches(
base::CommandLine* command_line,
int child_process_id) {
ChromeContentBrowserClient::AppendExtraCommandLineSwitches(command_line,
child_process_id);
// Necessary to launch sub-processes in the correct mode.
command_line->AppendSwitch(switches::kEnableChromeRuntime);
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeContentBrowserClientCef::background_task_runner() const {
return browser_main_parts_->background_task_runner();
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeContentBrowserClientCef::user_visible_task_runner() const {
return browser_main_parts_->user_visible_task_runner();
}
scoped_refptr<base::SingleThreadTaskRunner>
ChromeContentBrowserClientCef::user_blocking_task_runner() const {
return browser_main_parts_->user_blocking_task_runner();
}