[Telemetry] Reorganize everything.

tools/telemetry/telemetry/core/chrome/extension_dict_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 httplib
 import json
 import re
 import socket
 import urllib2
 import weakref
 
-from telemetry import browser_gone_exception
-from telemetry import extension_page
-from telemetry import inspector_backend
+from telemetry.core import exceptions
+from telemetry.core import extension_page
+from telemetry.core.chrome import inspector_backend
 
 class ExtensionNotFoundException(Exception):
   pass
 
 class ExtensionDictBackend(object):
   def __init__(self, browser_backend):
     self._browser_backend = browser_backend
     # Maps extension ids to ExtensionPage objects.
     self._extension_dict = weakref.WeakValueDictionary()
 
@@ skipping 38 matching lines @@
       if self._GetExtensionId(extension_info) == extension_id:
         return extension_info
     return None
 
   def _GetExtensionInfoList(self, timeout=None):
     try:
       data = self._browser_backend.Request('', timeout=timeout)
       return self._FilterExtensions(json.loads(data))
     except (socket.error, httplib.BadStatusLine, urllib2.URLError):
       if not self._browser_backend.IsBrowserRunning():
-        raise browser_gone_exception.BrowserGoneException()
-      raise browser_gone_exception.BrowserConnectionGoneException()
+        raise exceptions.BrowserGoneException()
+      raise exceptions.BrowserConnectionGoneException()
 
   def _FilterExtensions(self, all_pages):
     return [page_info for page_info in all_pages
             if page_info['url'].startswith('chrome-extension://')]
 
   def _GetExtensionIds(self):
     return map(self._GetExtensionId, self._GetExtensionInfoList())