[Telemetry] Reorganize everything.

tools/telemetry/telemetry/core/chrome/cros_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 logging
 import os
 import subprocess
 
-from telemetry import browser_backend
-from telemetry import util
+from telemetry.core import util
+from telemetry.core.chrome import browser_backend
 
 class CrOSBrowserBackend(browser_backend.BrowserBackend):
   def __init__(self, browser_type, options, cri):
     super(CrOSBrowserBackend, self).__init__(is_content_shell=False,
         supports_extensions=True, options=options)
     # Initialize fields so that an explosion during init doesn't break in Close.
     self._options = options
     self._cri = cri
     self._browser_type = browser_type
 
@@ skipping 195 matching lines @@
 
   @property
   def url(self):
     assert self._proc
     return 'http://localhost:%i' % self._host_port
 
   def Close(self):
     if self._proc:
       self._proc.kill()
       self._proc = None