Add running unit tests to run-bindings-tests.

third_party/WebKit/Tools/Scripts/webkitpy/path_finder.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/path_finder.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/path_finder.py b/third_party/WebKit/Tools/Scripts/webkitpy/path_finder.py
new file mode 100644
index 0000000000000000000000000000000000000000..a64cefea20f75c42aaf9697e50ffb03d4c37b424
--- /dev/null
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/path_finder.py
@@ -0,0 +1,48 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.

[Dirk Pranke, 2016/12/07 03:35:11]

There's a lot of overlap between this file and webkitpy/common/webkit_finder.py
. Can we add logic to that file instead?

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+"""Tiny utility to find various paths, relevant for running tests.
+"""
+
+import os
+import sys
+
+
+def find_typ_dir():

[Yuki, 2016/12/06 07:59:42]

nit: "find_typ_dir" reads to me that this function simply looks for something
and doesn't make any side effect.  Actually, the purpose of this function is to
update the system path.  Then, I'd recommend to rename this function to
something like "add_typ_dir_to_sys_path".

[Dirk Pranke, 2016/12/07 03:35:11]

Agreed.

+    path_to_typ = get_typ_dir()
+    if path_to_typ not in sys.path:
+        sys.path.append(path_to_typ)
+
+
+def find_bindings_scripts_dir():

[Yuki, 2016/12/06 07:59:42]

ditto

+    path_to_bindings_scripts = get_bindings_scripts_dir()
+    if path_to_bindings_scripts not in sys.path:
+        sys.path.append(path_to_bindings_scripts)
+
+
+def get_bindings_scripts_dir():
+    return os.path.join(get_source_dir(), 'bindings', 'scripts')
+
+
+def get_blink_dir():
+    return os.path.dirname(os.path.dirname(get_scripts_dir()))
+
+
+def get_chromium_src_dir():
+    return os.path.dirname(os.path.dirname(get_blink_dir()))
+
+
+def get_scripts_dir():
+    return os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
+
+
+def get_source_dir():
+    return os.path.join(get_blink_dir(), 'Source')
+
+
+def get_typ_dir():
+    return os.path.join(get_chromium_src_dir(), 'third_party', 'typ')
+
+
+def get_webkitpy_thirdparty_dir():
+    return os.path.join(get_scripts_dir(), 'webkitpy', 'thirdparty')