Elevated install of recovery component (component update part)

chrome/browser/component_updater/component_updater_service.h

Index: chrome/browser/component_updater/component_updater_service.h
diff --git a/chrome/browser/component_updater/component_updater_service.h b/chrome/browser/component_updater/component_updater_service.h
index 35d4b3aa856bed09fbaf4f8f87123c983d4f31e7..a67ef7d0ec7ecbd07fe99ea29f150c127eced966 100644
--- a/chrome/browser/component_updater/component_updater_service.h
+++ b/chrome/browser/component_updater/component_updater_service.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <vector>
 
+#include "base/callback.h"
 #include "base/version.h"
 #include "url/gurl.h"
 
@@ -31,6 +32,8 @@ namespace component_updater {
 
 class OnDemandUpdater;
 
+typedef base::Callback<bool(const base::FilePath&)> InstallerSourceSerializer;
+
 // Component specific installers must derive from this class and implement
 // OnUpdateError() and Install(). A valid instance of this class must be
 // given to ComponentUpdateService::RegisterComponent().
@@ -48,6 +51,11 @@ class ComponentInstaller {
   virtual bool Install(const base::DictionaryValue& manifest,
                        const base::FilePath& unpack_path) = 0;
 
+  // Called by the component updater if Install() retuns false. This gives
+  // installer a chance to handle install failure. |serializer| knows how to
+  // save installer source information to the given path for retry later.
+  virtual void OnInstallError(const InstallerSourceSerializer& serializer) = 0;
+
   // Set |installed_file| to the full path to the installed |file|. |file| is
   // the filename of the file in this component's CRX. Returns false if this is
   // not possible (the file has been removed or modified, or its current