Run safebrowsing_service_test through the net testserver code.

net/test/base_test_server.h

Index: net/test/base_test_server.h
diff --git a/net/test/base_test_server.h b/net/test/base_test_server.h
index cd996cbc9056b1a8934b16720b30ed0f85cac2d6..672b44de3145a034834e8b5374a4732e5156464a 100644
--- a/net/test/base_test_server.h
+++ b/net/test/base_test_server.h
@@ -206,7 +206,13 @@ class BaseTestServer {
 
   // Generates a DictionaryValue with the arguments for launching the external
   // Python test server.
-  bool GenerateArguments(base::DictionaryValue* arguments) const;
+  bool GenerateArguments(base::DictionaryValue* arguments) const
+    WARN_UNUSED_RESULT;
+
+  // Subclasses can override this to add arguments that are specific to their
+  // own test servers.
+  virtual bool GenerateAdditionalArguments(
+      base::DictionaryValue* arguments) const WARN_UNUSED_RESULT;
 
  private:
   void Init(const std::string& host);