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

chrome/install_static/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//testing/test.gni")
 
 assert(is_win)
 
 # This file only contains utility functions which must only depend on kernel32
@@ skipping 11 matching lines @@
   libs = [
     "kernel32.lib",
     "advapi32.lib",
   ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }
+
+test("install_static_unittests") {
+  output_name = "install_static_unittests"
+  sources = [
+    "install_static_unittests.cc",

[grt (UTC plus 2), 2016/05/27 14:13:20]

this source is testing functionality in install_util.{cc,h}, so please name it
install_util_unittest.cc (also, singular "unittest" is much more prevalent than
plural "unittests").

[ananta, 2016/05/27 20:05:25]

Done.

+  ]
+  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",
+  ]
+ }
+