[telemetry] Add util.path module and util.path.FindInstalledWindowsApplication.

tools/telemetry/telemetry/util/path_unittest.py

Index: tools/telemetry/telemetry/util/path_unittest.py
diff --git a/tools/telemetry/telemetry/util/path_unittest.py b/tools/telemetry/telemetry/util/path_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..2352c75f12caf20053244da69f4393ede3020788
--- /dev/null
+++ b/tools/telemetry/telemetry/util/path_unittest.py
@@ -0,0 +1,21 @@
+# Copyright 2014 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 os
+import sys
+import unittest
+
+from telemetry import decorators
+from telemetry.util import path
+
+
+class PathTest(unittest.TestCase):
+  def testIsExecutable(self):
+    self.assertFalse(path.IsExecutable('nonexistent_file'))
+    self.assertTrue(path.IsExecutable(sys.executable))
+
+  @decorators.Enabled('win')
+  def testFindInstalledWindowsApplication(self):
+    self.assertTrue(path.FindInstalledWindowsApplication(os.path.join(
+        'Internet Explorer', 'iexplore.exe')))