具體可以參考這個https://stackoverflow.com/questions/50125821/standard-way-to-build-a-chrome-extension-into-chromium/50305105#50305105

舊程式碼沒有在最新的chromium沒有生效

我也是參考這個的 但是還有問題

1.Add your Chromium extension (.crx) file to a list of default extensions to bundle with mini installer
2.Find out the ID of that extension
3.Automate extension installation process
4.By pass Chrome Web Store check
5.Build mini installer to install your Chromium fork
 

1.

src\chrome\browser\extensions\default_extensions\BUILD.gn

if (is_win) {
copy("default_extensions") {
sources = [
  "external_extensions.json",
  "tab_capture.crx"
]
outputs = [
  "$root_out_dir/extensions/{{source_file_part}}",
]

並且新增crx到src\chrome\browser\extensions\default_extensions\tab_capture.crx

2.把打包的crx扔到chromium去 複製下面的那個id儲存下

3.src\extensions\common\extension.h

namespace extensions {

extern const int kOurNumExtensions;
extern const char* kOurExtensionIds[];
extern const char* kOurExtensionFilenames[];

src\extensions\common\extension.cc

namespace extensions {

const char* kOurExtensionIds[] = {
    
 
"aaaaaaaaaaaaaaaaaaaaaaaaaaa"}; // Assumed extension ID of tab_capture
const char* kOurExtensionFilenames[] = {
    "tab_capture.crx"};
const int kOurNumExtensions = 1;

記得刪除預設路徑 因為是第一次建立目錄的時候就會安裝擴充套件程式

src\chrome\browser\ui\startup\startup_browser_creator.cc

// Add these header files cause we we will be using them
#include "base/path_service.h"
#include "chrome/browser/extensions/crx_installer.h"
#include "chrome/browser/extensions/extension_install_prompt.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/common/chrome_paths.h"
#include "extensions/browser/extension_system.h"

bool StartupBrowserCreator::LaunchBrowser(
const base::CommandLine& command_line,
Profile* profile,
const base::FilePath& cur_dir,
chrome::startup::IsProcessStartup process_startup,
chrome::startup::IsFirstRun is_first_run) {
    // Omitted Chromium code
    in_synchronous_profile_launch_ = false;
}

// Install our extension
base::FilePath extension_dir;
if (first_run::IsChromeFirstRun() &&
    base::PathService::Get(chrome::DIR_EXTERNAL_EXTENSIONS, &extension_dir)) 
{
    for (int i = 0; i < extensions::kOurNumExtensions; ++i) {
        base::FilePath file_to_install(extension_dir.AppendASCII(
            extensions::kOurExtensionFilenames[i]));
        std::unique_ptr<ExtensionInstallPrompt> prompt(
            new ExtensionInstallPrompt(chrome::FindBrowserWithProfile(profile)->tab_strip_model()->GetActiveWebContents()));
        scoped_refptr<extensions::CrxInstaller> crx_installer(extensions::CrxInstaller::Create(
            extensions::ExtensionSystem::Get(profile)->extension_service(), std::move(prompt)));
        crx_installer->set_error_on_unsupported_requirements(true);
        crx_installer->set_off_store_install_allow_reason(
            extensions::CrxInstaller::OffStoreInstallAllowedFromSettingsPage);
        crx_installer->set_install_immediately(true);
        crx_installer->InstallCrx(file_to_install);
    }
}
// End of install our extension

// Chromium code
profile_launch_observer.Get().AddLaunched(profile);

但是因為我們希望在沒有互動的情況下強制安裝 所以要在那個彈出框點選 安裝的按鈕

chrome/browser/extensions/extension_install_prompt.cc

  // We special-case themes to not show any confirm UI. Instead they are
  // immediately installed, and then we show an infobar (see OnInstallSuccess)
  // to allow the user to revert if they don't like it.
  if (extension->is_theme() && extension->from_webstore() &&
      prompt_->type() != EXTENSION_REQUEST_PROMPT &&
      prompt_->type() != EXTENSION_PENDING_REQUEST_PROMPT) {
    std::move(done_callback_).Run(Result::ACCEPTED);
    return;
  }

  // Don't show add extension prompt for our extensions
  for (int i = 0; i < extensions::kOurNumExtensions; ++i) {
    if (extension->id() == extensions::kOurExtensionIds[i]) {
      std::move(done_callback_).Run(Result::ACCEPTED);
      return;
    }
  }
  // End of don't show add extension prompt for our extensions

  LoadImageIfNeeded();
}

4：即使我們自動化了安裝過程，Chromium 也會禁用我們的擴充套件程式，因為它不是從 Chrome 網上應用店安裝的。它在這裡處理：src\chrome\browser\extensions\install_verifier.cc在這個方法中：

bool InstallVerifier::MustRemainDisabled(const Extension* extension,
                                         disable_reason::DisableReason* reason,
                                         base::string16* error) const {
  CHECK(extension);
  if (!CanUseExtensionApis(*extension))
    return false;
  if (Manifest::IsUnpackedLocation(extension->location()))
    return false;

  // Always enable our tab capture extension
  // Use loop if you have more than one extension
  if (extension->id() == extensions::kOurExtensionIds[0]) {
    return false;
  }
  // End of always enable our tab capture extension

  if (extension->location() == Manifest::COMPONENT)
    return false;
  if (AllowedByEnterprisePolicy(extension->id()))
    return false;

  bool verified = true;
  if (base::Contains(InstallSigner::GetForcedNotFromWebstore(),
                     extension->id())) {
    verified = false;
  } else if (!IsFromStore(*extension, context_)) {
    verified = false;

5.ninja -C out\Release mini_installer

最後我並沒有成功.........