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

tools/telemetry/telemetry/desktop_browser_backend.py

 # 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 as os
 import subprocess as subprocess
 import shutil
 import tempfile
 
 from telemetry import browser_backend
 from telemetry import util
@@ skipping 35 matching lines @@
       raise
 
   def GetBrowserStartupArgs(self):
     args = super(DesktopBrowserBackend, self).GetBrowserStartupArgs()
     args.append('--remote-debugging-port=%i' % self._port)
     args.append('--window-size=1280,1024')
     args.append('--enable-benchmarking')
     if not self.options.dont_override_profile:
       self._tmpdir = tempfile.mkdtemp()
       args.append('--user-data-dir=%s' % self._tmpdir)
+    extensions = ''
+    component_extensions = ''
+    for extension in self.options.extensions_to_load:
+      if extension.is_component:
+        if len(component_extensions):
+          component_extensions += ','

[nduca, 2012/12/07 19:23:47]

how about compoent_extensions and extensions being []'s and using
','.join(compoent_extensions) to comma separate them

[zel, 2012/12/12 21:03:42]

done, made it even more pythony 

+        component_extensions += extension.path
+      else:
+        if len(extensions):
+          extensions += ','
+        extensions += extension.path
+    if len(extensions) > 0:
+      args.append('--load-extension=%s' % extensions)
+    if len(component_extensions) > 0:
+      args.append('--load-component-extension=%s' % component_extensions)
+
     return args
 
   def IsBrowserRunning(self):
     return self._proc.poll() == None
 
   def __del__(self):
     self.Close()
 
   def Close(self):
     if self._proc:
@@ skipping 36 matching lines @@
   def __init__(self, *port_pairs):
     self._host_port = port_pairs[0][0]
 
   @property
   def url(self):
     assert self._host_port
     return 'http://localhost:%i' % self._host_port
 
   def Close(self):
     self._host_port = None