GN: don't write separate files for non-binary targets

tools/gn/ninja_toolchain_writer_unittest.cc

Index: tools/gn/ninja_toolchain_writer_unittest.cc
diff --git a/tools/gn/ninja_toolchain_writer_unittest.cc b/tools/gn/ninja_toolchain_writer_unittest.cc
index fc52f7da7be7df56513bc6f13b0e3a7991ca42d3..4e9d7674957d45525ac70dcbb69b1963a94bcba5 100644
--- a/tools/gn/ninja_toolchain_writer_unittest.cc
+++ b/tools/gn/ninja_toolchain_writer_unittest.cc
@@ -11,14 +11,8 @@
 TEST(NinjaToolchainWriter, WriteToolRule) {
   TestWithScope setup;
 
-  //Target target(setup.settings(), Label(SourceDir("//foo/"), "target"));
-  //target.set_output_type(Target::EXECUTABLE);
-  //target.SetToolchain(setup.toolchain());
-
   std::ostringstream stream;
-
-  NinjaToolchainWriter writer(setup.settings(), setup.toolchain(),
-                              std::vector<const Target*>(), stream);
+  NinjaToolchainWriter writer(setup.settings(), setup.toolchain(), stream);
   writer.WriteToolRule(Toolchain::TYPE_CC,
                        setup.toolchain()->GetTool(Toolchain::TYPE_CC),
                        std::string("prefix_"));