[Extensions] Remove mechanism for non-generated schemas

extensions/test/test_extensions_client.h

Index: extensions/test/test_extensions_client.h
diff --git a/extensions/test/test_extensions_client.h b/extensions/test/test_extensions_client.h
index 0dfd716cdc4b505492a16efd9e5c21aa36ee4d0c..2c91ae3a589857365c54de3f6ca0b27d8322addb 100644
--- a/extensions/test/test_extensions_client.h
+++ b/extensions/test/test_extensions_client.h
@@ -46,7 +46,6 @@ class TestExtensionsClient : public ExtensionsClient {
   bool IsScriptableURL(const GURL& url, std::string* error) const override;
   bool IsAPISchemaGenerated(const std::string& name) const override;
   base::StringPiece GetAPISchema(const std::string& name) const override;
-  void RegisterAPISchemaResources(ExtensionAPI* api) const override;
   bool ShouldSuppressFatalErrors() const override;
   void RecordDidSuppressFatalError() override;
   std::string GetWebstoreBaseURL() const override;