Add tests for braille commands.

chrome/test/base/js2gtest.gni

Index: chrome/test/base/js2gtest.gni
diff --git a/chrome/test/base/js2gtest.gni b/chrome/test/base/js2gtest.gni
index 213e7b5ba5580de50fbd37715805ba3927432dc0..e8034906ea37917b9ff378c61c08bfae7933f71f 100644
--- a/chrome/test/base/js2gtest.gni
+++ b/chrome/test/base/js2gtest.gni
@@ -35,6 +35,9 @@ template("js2gtest") {
     if (defined(invoker.deps_js)) {
       inputs += [ invoker.deps_js ]
     }
+    if (defined(invoker.extra_gen_files)) {
+      inputs += invoker.extra_gen_files

[brettw, 2015/08/26 22:31:06]

What does this name mean? I read this as "extra generated files" but it seems to
be used as "extra input files".

Can you add documentation for this above the template (it's bad that the other
ones don't have this, but at least we can start now) and consider renaming it if
the comment doesn't make the selected name clear?

+    }
 
     # Outputs. The script will copy the source files to the output directory,
     # which then must be treated as runtime data. The generated .cc file isn't