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

tools/telemetry/telemetry/android_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 json
 import logging
 import os
 import subprocess
 import sys
 import tempfile
 import time
 
 from telemetry import adb_commands
 from telemetry import browser_backend
 from telemetry import browser_gone_exception
 
 class AndroidBrowserBackend(browser_backend.BrowserBackend):
   """The backend for controlling a browser instance running on Android.
   """
   def __init__(self, options, adb, package,
                is_content_shell, cmdline_file, activity, devtools_remote_port):
     super(AndroidBrowserBackend, self).__init__(is_content_shell, options)
+    if len(options.extensions_to_load) > 0:
+      raise Exception('Cannot load extensions for android browser!')
     # Initialize fields so that an explosion during init doesn't break in Close.
     self._options = options
     self._adb = adb
     self._package = package
     self._cmdline_file = cmdline_file
     self._activity = activity
     if not options.keep_test_server_ports:
       adb_commands.ResetTestServerPortAllocation()
     self._port = adb_commands.AllocateTestServerPort()
     self._devtools_remote_port = devtools_remote_port
@@ skipping 146 matching lines @@
               '-dump', f.name], stdout=subprocess.PIPE).communicate()[0]
         except Exception:
           pass
         if symbolized_stack:
           return symbolized_stack
     # Otherwise, just return the last 100 lines of logcat.
     return '\n'.join(self._adb.RunShellCommand('logcat -d -t 100'))
 
   def CreateForwarder(self, *port_pairs):
     return adb_commands.Forwarder(self._adb, *port_pairs)