Call SetUpCommandLine of super class

Change-Id: I276ee26927af91971e8dd54af455ac55c93b8731
Reviewed-on: https://chromium-review.googlesource.com/c/1286131
Commit-Queue: Alexander Yashkin <a-v-y@yandex-team.ru>
Reviewed-by: David Tseng <dtseng@chromium.org>
Reviewed-by: Tommy Li <tommycli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600666}

chrome/test/base/js2gtest.js

@@ -451,7 +451,8 @@ class ${testFixture} : public ${typedefCppFixture} {
       if (hasSwitches) {
       // Override SetUpCommandLine and add each switch.
       output(`
-  void SetUpCommandLine(base::CommandLine* command_line) override {`);
+  void SetUpCommandLine(base::CommandLine* command_line) override {
+    ${typedefCppFixture}::SetUpCommandLine(command_line);`);
       for (var i = 0; i < switches.length; i++) {
         output(`
     command_line->AppendSwitchASCII(