Attempt to repair corrupt enterprise policy force-installed extensions

extensions/browser/updater/extension_downloader.h

Index: extensions/browser/updater/extension_downloader.h
diff --git a/extensions/browser/updater/extension_downloader.h b/extensions/browser/updater/extension_downloader.h
index 36888ec192df3340e0780b20ea8d7c6a75139441..9165a56dcea42eae8b98d75c9bbd261c04fd5838 100644
--- a/extensions/browser/updater/extension_downloader.h
+++ b/extensions/browser/updater/extension_downloader.h
@@ -80,9 +80,12 @@ class ExtensionDownloader : public net::URLFetcherDelegate,
   // In that case, no callbacks will be performed on the |delegate_|.
   // The |request_id| is passed on as is to the various |delegate_| callbacks.
   // This is used for example by ExtensionUpdater to keep track of when
-  // potentially concurrent update checks complete.
+  // potentially concurrent update checks complete. The |is_corrupt_reinstall|
+  // parameter is used to indicate in the request that we detected corruption in
+  // the local copy of the extension and we want to perform a reinstall of it.
   bool AddPendingExtension(const std::string& id,
                            const GURL& update_url,
+                           bool is_corrupt_reinstall,
                            int request_id);
 
   // Schedules a fetch of the manifest of all the extensions added with
@@ -177,12 +180,23 @@ class ExtensionDownloader : public net::URLFetcherDelegate,
     int oauth2_attempt_count;
   };
 
+  // Parameters for special cases that aren't used for most requests.
+  struct ExtraParams {
+    // Additional data to be passed up in the update request.
+    std::string update_url_data;
+
+    // Indicates whether this extension is being reinstalled due to corruption.
+    bool is_corrupt_reinstall;
+
+    ExtraParams();
+  };
+
   // Helper for AddExtension() and AddPendingExtension().
   bool AddExtensionData(const std::string& id,
                         const base::Version& version,
                         Manifest::Type extension_type,
                         const GURL& extension_update_url,
-                        const std::string& update_url_data,
+                        const ExtraParams& extra,
                         int request_id);
 
   // Adds all recorded stats taken so far to histogram counts.