Telemetry support for extensions.

tools/telemetry/telemetry/browser_options.py

Index: tools/telemetry/telemetry/browser_options.py
===================================================================
--- tools/telemetry/telemetry/browser_options.py	(revision 176402)
+++ tools/telemetry/telemetry/browser_options.py	(working copy)
@@ -10,6 +10,11 @@
 from telemetry import browser_finder
 from telemetry import wpr_modes
 
+class ExtensionToLoad(object):
+  def __init__(self, path, is_component):

[nduca, 2013/01/15 05:31:06]

should we assert that the extension exists?

+    self.path = path
+    self.is_component = is_component

[nduca, 2013/01/15 05:31:06]

we need to find some common area that validates that the extension path exists
and contains a manifest that parses, and throws if not. Possibly here when its
constructed?

+
 class BrowserOptions(optparse.Values):
   """Options to be used for discovering and launching a browser."""
 
@@ -25,6 +30,7 @@
     self.dont_override_profile = False
     self.extra_browser_args = []
     self.show_stdout = False
+    self.extensions_to_load = []
 
     self.cros_remote = None
     self.wpr_mode = wpr_modes.WPR_OFF
@@ -86,6 +92,12 @@
     group.add_option('--show-stdout',
         action='store_true',
         help='When possible, will display the stdout of the process')
+    group.add_option('--load-component-extension',
+        dest='component_extensions_to_load_as_string',
+        help='Loads additional component extensions.')
+    group.add_option('--load-extension',
+        dest='extensions_to_load_as_string',
+        help='Loads additional extension.')
     parser.add_option_group(group)
 
     # Page set options
@@ -149,6 +161,18 @@
           self.extra_browser_args_as_string) # pylint: disable=E1101
         self.extra_browser_args.extend(tmp)
         delattr(self, 'extra_browser_args_as_string')
+      if self.component_extensions_to_load_as_string: # pylint: disable=E1101

[nduca, 2013/01/15 05:31:06]

i dont think we need to add support for loading extensions from the command line
yet. Lets do that if we need it. All we need in this file is the ExtensionToLoad
and the addition of extensions_to_load to browser_options.

+        paths = self.component_extensions_to_load_as_string.split(',')
+        self.extensions_to_load.extend(
+            [ExtensionToLoad(ext_path, True)
+             for ext_path in paths])
+        delattr(self, 'component_extensions_to_load_as_string')
+      if self.extensions_to_load_as_string: # pylint: disable=E1101
+        paths = self.extensions_to_load_as_string.split(',')
+        self.extensions_to_load.extend(
+            [ExtensionToLoad(ext_path, False)
+             for ext_path in paths])
+        delattr(self, 'component_extensions_to_load_as_string')
       return ret
     parser.parse_args = ParseArgs
     return parser