Hold cros_component_installers in browser_process.

chrome/browser/browser_process_impl.h

Index: chrome/browser/browser_process_impl.h
diff --git a/chrome/browser/browser_process_impl.h b/chrome/browser/browser_process_impl.h
index c66414e3a700c6e1060e0bb74adb76fd31ae0ffe..0905a4b960ef2cc3d6d08d01df86366ae09847f5 100644
--- a/chrome/browser/browser_process_impl.h
+++ b/chrome/browser/browser_process_impl.h
@@ -24,6 +24,7 @@
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/lifetime/keep_alive_state_observer.h"
 #include "chrome/common/features.h"
+#include "components/component_updater/default_component_installer.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "extensions/features/features.h"
 #include "media/media_features.h"
@@ -146,6 +147,12 @@ class BrowserProcessImpl : public BrowserProcess,
   CRLSetFetcher* crl_set_fetcher() override;
   component_updater::PnaclComponentInstaller* pnacl_component_installer()
       override;
+#if defined(OS_CHROMEOS)
+  component_updater::DefaultComponentInstaller* cros_component_installer(
+      const std::string& name,
+      std::unique_ptr<component_updater::ComponentInstallerTraits>
+          installer_traits) override;
+#endif
   component_updater::SupervisedUserWhitelistInstaller*
   supervised_user_whitelist_installer() override;
   MediaFileSystemRegistry* media_file_system_registry() override;
@@ -354,6 +361,12 @@ class BrowserProcessImpl : public BrowserProcess,
   std::unique_ptr<physical_web::PhysicalWebDataSource>
       physical_web_data_source_;
 
+#if defined(OS_CHROMEOS)
+  std::map<std::string,
+           scoped_refptr<component_updater::DefaultComponentInstaller>>
+      cros_component_installers_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };