Proof of concept for running extension API stack through dev tools.

tools/telemetry/examples/telemetry_extension_test.py

+#!/usr/bin/env python
+# Copyright (c) 2012 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 time
+
+sys.path.append(os.path.join(os.path.dirname(__file__), '..'))

[nduca, 2012/11/29 05:09:27]

you can even move this file to the telemetry_auto folder and then copy the stuff
from tools/perf/perf_tools/__init__.py to pull in telemetry from its usual
location

also, we've found that a standard python module directory structure works well,
e.g.

project_name/
   project_module_name
      __init__.py
      module1

that way you can append $PATH_TO/project_name/ to sys.path, and then import
project_module_name as if it was local.

+
+import telemetry
+
+def Main(args):
+  options = telemetry.BrowserOptions()
+  parser = options.CreateParser('telemetry_extension_test.py')
+  options, args = parser.parse_args(args)
+
+  browser_to_create = telemetry.FindBrowser(options)

[nduca, 2012/11/29 05:09:27]

seems like we should add a feature on BrowserOptions for "please load this
extension when you boot the browser." Then telemetry can take care of pushing
the extension to the device if needed. I can walk you through the rough approach
if you feel like this id doing the right thing....

[zel, 2012/11/29 22:58:45]

Sure, will sync up with you about this one.

+  assert browser_to_create
+  with browser_to_create.Create() as b:
+    with b.ConnectToExtensionPage('aapnijgdinlhnhlmodcfapnahmbfebeb') as ext:
+      ext.runtime.Evaluate("chrome.tabs.create({url:'http://www.google.com'},function(){})")

[nduca, 2012/11/29 05:09:27]

so to do this synchronously you'd do this:

ext.runtime.Execute("window.__done = false");
def IsDone():
  return ext.runtime.Evaluate("window.__done");
ext.runtime.Evaluate(""""
chrome.tabs.create({url:'http://www.google.com'},function() {
   window.__done = true;
})
"""
WaitFor(IsDone);

[zel, 2012/11/29 22:58:45]

Done. I've created a new class ExtensionPage that derives from Tab and extends
it with wrapper method for doing this trickery + event interception.

+      print "DONE!"
+
+  return 0
+
+if __name__ == '__main__':
+  sys.exit(Main(sys.argv[1:]))