[Telemetry] Reorganize everything.

tools/telemetry/telemetry/core/chrome/tab_list_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 socket
 import urllib2
 import weakref
 
-from telemetry import browser_gone_exception
-from telemetry import tab
-from telemetry import inspector_backend
-from telemetry import util
+from telemetry.core import util
+from telemetry.core import exceptions
+from telemetry.core import tab
+from telemetry.core.chrome import inspector_backend
 
 class TabListBackend(object):
   def __init__(self, browser_backend):
     self._browser_backend = browser_backend
 
     # Stores web socket debugger URLs in iteration order.
     self._tab_list = []
     # Maps debugger URLs to Tab objects.
     self._tab_dict = weakref.WeakValueDictionary()
 
@@ skipping 93 matching lines @@
 
   def _ListTabs(self, timeout=None):
     try:
       data = self._browser_backend.Request('', timeout=timeout)
       all_contexts = json.loads(data)
       tabs = [ctx for ctx in all_contexts
               if not ctx['url'].startswith('chrome-extension://')]
       return tabs
     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 _UpdateTabList(self):
     def GetDebuggerUrl(tab_info):
       if 'webSocketDebuggerUrl' not in tab_info:
         return None
       return tab_info['webSocketDebuggerUrl']
     new_tab_list = map(GetDebuggerUrl, self._ListTabs())
     self._tab_list = [t for t in self._tab_list
                       if t in self._tab_dict or t in new_tab_list]
     self._tab_list += [t for t in new_tab_list
                        if t is not None and t not in self._tab_list]
 
   def _FindTabInfo(self, debugger_url):
     for tab_info in self._ListTabs():
       if tab_info.get('webSocketDebuggerUrl') == debugger_url:
         return tab_info
     return None