Extract permission alias info from PermissionsProvider

extensions/common/permissions/permissions_provider.h

Index: extensions/common/permissions/permissions_provider.h
diff --git a/extensions/common/permissions/permissions_provider.h b/extensions/common/permissions/permissions_provider.h
index 8d618045828638e25b4f77d31bcafca41795ae92..5dca82d559d09e8adb9654ae931a8696e28007c7 100644
--- a/extensions/common/permissions/permissions_provider.h
+++ b/extensions/common/permissions/permissions_provider.h
@@ -31,9 +31,6 @@ class PermissionsProvider {
   // Returns all the known permissions.
   virtual std::vector<std::unique_ptr<APIPermissionInfo>> GetAllPermissions()
       const = 0;
-
-  // Returns all the known permission aliases.
-  virtual std::vector<AliasInfo> GetAllAliases() const = 0;
 };
 
 }  // namespace extensions