Clean up empty directories after install and on errors

chrome/browser/component_updater/component_updater_utils.h

Index: chrome/browser/component_updater/component_updater_utils.h
diff --git a/chrome/browser/component_updater/component_updater_utils.h b/chrome/browser/component_updater/component_updater_utils.h
index f4b3fdddf0b616b60490a723b303ac7f05c90ce0..fdd949e08fbfa5744d615bf671698307b26da4a7 100644
--- a/chrome/browser/component_updater/component_updater_utils.h
+++ b/chrome/browser/component_updater/component_updater_utils.h
@@ -9,6 +9,10 @@
 
 class GURL;
 
+namespace base {
+class FilePath;
+}
+
 namespace net {
 class URLFetcher;
 class URLFetcherDelegate;
@@ -55,6 +59,11 @@ int GetFetchError(const net::URLFetcher& fetcher);
 // Returns true if the |status_code| represents a server error 5xx.
 bool IsHttpServerError(int status_code);
 
+// Deletes the file and its directory, if the directory is empty. If the
+// parent directory is not empty, the function ignores deleting the directory.
+// Returns true if the file and the empty directory are deleted.
+bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath);
+
 }  // namespace component_updater
 
 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_UTILS_H_