Allow extension overinstall

chrome/browser/extensions/extensions_service.h

Index: chrome/browser/extensions/extensions_service.h
diff --git a/chrome/browser/extensions/extensions_service.h b/chrome/browser/extensions/extensions_service.h
index b443446da77665c9122aa15d273e94a14c2968de..25b27d292289ed1143b116e06817f8edc9e8a7da 100644
--- a/chrome/browser/extensions/extensions_service.h
+++ b/chrome/browser/extensions/extensions_service.h
@@ -271,10 +271,6 @@ class ExtensionsService
   void OnExtensionInstalled(Extension* extension,
                             bool allow_privilege_increase);
 
-  // Called by the backend when an attempt was made to reinstall the same
-  // version of an existing extension.
-  void OnExtensionOverinstallAttempted(const std::string& id);
-
   // Called by the backend when an external extension is found.
   void OnExternalExtensionFound(const std::string& id,
                                 const std::string& version,