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Add initial chrome runtime support (see issue #2969)

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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
This commit is contained in:
Marshall Greenblatt
2020-06-24 22:34:12 -04:00
parent 049caf9131
commit 1174994211
37 changed files with 994 additions and 158 deletions
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34
libcef/common/task_runner_impl.cc
View File

@@ -3,14 +3,13 @@
// can be found in the LICENSE file.
#include "libcef/common/task_runner_impl.h"
#include "libcef/browser/content_browser_client.h"
#include "libcef/common/content_client.h"
#include "libcef/renderer/content_renderer_client.h"
#include "libcef/common/task_runner_manager.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/task/post_task.h"
#include "base/threading/thread_task_runner_handle.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
@@ -51,17 +50,8 @@ CefTaskRunnerImpl::CefTaskRunnerImpl(
// static
scoped_refptr<base::SingleThreadTaskRunner> CefTaskRunnerImpl::GetTaskRunner(
CefThreadId threadId) {
// Render process.
if (threadId == TID_RENDERER) {
CefContentRendererClient* client = CefContentRendererClient::Get();
if (client)
return client->render_task_runner();
return nullptr;
}
// Browser process.
CefContentBrowserClient* client = CefContentBrowserClient::Get();
if (!client)
auto* manager = CefTaskRunnerManager::Get();
if (!manager)
return nullptr;
int id = -1;
@@ -70,16 +60,18 @@ scoped_refptr<base::SingleThreadTaskRunner> CefTaskRunnerImpl::GetTaskRunner(
id = BrowserThread::UI;
break;
case TID_FILE_BACKGROUND:
return client->background_task_runner();
return manager->GetBackgroundTaskRunner();
case TID_FILE_USER_VISIBLE:
return client->user_visible_task_runner();
return manager->GetUserVisibleTaskRunner();
case TID_FILE_USER_BLOCKING:
return client->user_blocking_task_runner();
return manager->GetUserBlockingTaskRunner();
case TID_PROCESS_LAUNCHER:
return content::GetProcessLauncherTaskRunner();
case TID_IO:
id = BrowserThread::IO;
break;
case TID_RENDERER:
return manager->GetRenderTaskRunner();
default:
break;
};
@@ -99,6 +91,10 @@ scoped_refptr<base::SingleThreadTaskRunner> CefTaskRunnerImpl::GetTaskRunner(
// static
scoped_refptr<base::SingleThreadTaskRunner>
CefTaskRunnerImpl::GetCurrentTaskRunner() {
auto* manager = CefTaskRunnerManager::Get();
if (!manager)
return nullptr;
scoped_refptr<base::SingleThreadTaskRunner> task_runner;
// For named browser process threads return the same TaskRunner as
@@ -120,9 +116,7 @@ CefTaskRunnerImpl::GetCurrentTaskRunner() {
if (!task_runner.get()) {
// Check for a WebWorker thread.
CefContentRendererClient* client = CefContentRendererClient::Get();
if (client)
task_runner = client->GetCurrentTaskRunner();
return manager->GetWebWorkerTaskRunner();
}
return task_runner;