Hold cros_component_installers in browser_process.

components/component_updater/default_component_installer.h

Index: components/component_updater/default_component_installer.h
diff --git a/components/component_updater/default_component_installer.h b/components/component_updater/default_component_installer.h
index 61e6c56e7670df661e4a40603667a39e2411edb1..4feb6ec8d9f2105fcf8db0cd5975e11575b32500 100644
--- a/components/component_updater/default_component_installer.h
+++ b/components/component_updater/default_component_installer.h
@@ -124,9 +124,11 @@ class DefaultComponentInstaller : public update_client::CrxInstaller {
   // Only user-level component installations can be uninstalled.
   bool Uninstall() override;
 
- private:
+ protected:
   ~DefaultComponentInstaller() override;
+  std::unique_ptr<base::DictionaryValue> current_manifest_;

[sky, 2017/05/24 16:47:20]

Style guide says no protected members.

[xiaochu, 2017/05/24 19:56:54]

Done.

 
+ private:
   // If there is a installation of the component set up alongside Chrome's
   // files (as opposed to in the user data directory), sets current_* to the
   // values associated with that installation and returns true; otherwise,
@@ -145,7 +147,6 @@ class DefaultComponentInstaller : public update_client::CrxInstaller {
   base::FilePath current_install_dir_;
   base::Version current_version_;
   std::string current_fingerprint_;
-  std::unique_ptr<base::DictionaryValue> current_manifest_;
   std::unique_ptr<ComponentInstallerTraits> installer_traits_;
   scoped_refptr<base::SequencedTaskRunner> task_runner_;