Add functionality to the install_static library to tokenize strings and compare versions.

chrome/install_static/BUILD.gn

Index: chrome/install_static/BUILD.gn
diff --git a/chrome/install_static/BUILD.gn b/chrome/install_static/BUILD.gn
index 14d875e0b33df4184e7ac06997ddf0d3ca7b91ae..ec8ff5f6f49f43c188f1484cf7662d82a8c3179c 100644
--- a/chrome/install_static/BUILD.gn
+++ b/chrome/install_static/BUILD.gn
@@ -29,3 +29,19 @@ static_library("install_static_util") {
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }
+
+test("install_static_unittests") {
+  output_name = "install_static_unittests"
+  sources = [
+    "install_util_unittest.cc",
+  ]
+  include_dirs = [ "$target_gen_dir" ]
+  deps = [
+    "//base",
+    "//base/test:run_all_unittests",
+    "//base/test:test_support",
+    "//chrome/install_static:install_static_util",
+    "//testing/gmock",
+    "//testing/gtest",
+  ]
+}