[telemetry] Move telemetry/core/chrome/ to telemetry/core/backends/chrome/

tools/telemetry/telemetry/core/chrome/tab_list_backend.py

Index: tools/telemetry/telemetry/core/chrome/tab_list_backend.py
diff --git a/tools/telemetry/telemetry/core/chrome/tab_list_backend.py b/tools/telemetry/telemetry/core/chrome/tab_list_backend.py
deleted file mode 100644
index b61e4abe104f86051e8edd94dc9e6fc39e006bed..0000000000000000000000000000000000000000
--- a/tools/telemetry/telemetry/core/chrome/tab_list_backend.py
+++ /dev/null
@@ -1,135 +0,0 @@
-# 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 urllib2
-import weakref
-
-from telemetry.core import util
-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()
-
-  def Init(self):
-    self._UpdateTabList()
-
-  def New(self, timeout):
-    assert self._browser_backend.supports_tab_control
-
-    self._browser_backend.Request('new', timeout=timeout)
-    return self[-1]
-
-  def DoesDebuggerUrlExist(self, debugger_url):
-    return self._FindTabInfo(debugger_url) is not None
-
-  def CloseTab(self, debugger_url, timeout=None):
-    assert self._browser_backend.supports_tab_control
-
-    # TODO(dtu): crbug.com/160946, allow closing the last tab on some platforms.
-    # For now, just create a new tab before closing the last tab.
-    if len(self) <= 1:
-      self.New(timeout)
-
-    tab_id = debugger_url.split('/')[-1]
-    try:
-      response = self._browser_backend.Request('close/%s' % tab_id,
-                                               timeout=timeout,
-                                               throw_network_exception=True)
-    except urllib2.HTTPError:
-      raise Exception('Unable to close tab, tab id not found: %s' % tab_id)
-    assert response == 'Target is closing'
-
-    util.WaitFor(lambda: not self._FindTabInfo(debugger_url), timeout=5)
-
-    if debugger_url in self._tab_dict:
-      del self._tab_dict[debugger_url]
-    self._UpdateTabList()
-
-  def ActivateTab(self, debugger_url, timeout=None):
-    assert self._browser_backend.supports_tab_control
-
-    assert debugger_url in self._tab_dict
-    tab_id = debugger_url.split('/')[-1]
-    try:
-      response = self._browser_backend.Request('activate/%s' % tab_id,
-                                               timeout=timeout,
-                                               throw_network_exception=True)
-    except urllib2.HTTPError:
-      raise Exception('Unable to activate tab, tab id not found: %s' % tab_id)
-    assert response == 'Target activated'
-
-  def GetTabUrl(self, debugger_url):
-    tab_info = self._FindTabInfo(debugger_url)
-    # TODO(hartmanng): crbug.com/166886 (uncomment the following assert and
-    # remove the extra None check when _ListTabs is fixed):
-    # assert tab_info is not None
-    return tab_info['url'] if tab_info else None
-
-  def __iter__(self):
-    self._UpdateTabList()
-    return self._tab_list.__iter__()
-
-  def __len__(self):
-    self._UpdateTabList()
-    return len(self._tab_list)
-
-  def Get(self, index, ret):
-    """Returns self[index] if it exists, or ret if index is out of bounds.
-    """
-    self._UpdateTabList()
-    if len(self._tab_list) <= index:
-      return ret
-    debugger_url = self._tab_list[index]
-    # Lazily get/create a Tab object.
-    tab_object = self._tab_dict.get(debugger_url)
-    if not tab_object:
-      backend = inspector_backend.InspectorBackend(
-          self._browser_backend.browser,
-          self._browser_backend,
-          debugger_url)
-      tab_object = tab.Tab(backend)
-      self._tab_dict[debugger_url] = tab_object
-    return tab_object
-
-  def __getitem__(self, index):
-    tab_object = self.Get(index, None)
-    if tab_object is None:
-      raise IndexError('list index out of range')
-    return tab_object
-
-  def _ListTabs(self, timeout=None):
-    def _IsTab(context):
-      if 'type' in context:
-        return context['type'] == 'page'
-      # TODO: For compatibility with Chrome before r177683.
-      # This check is not completely correct, see crbug.com/190592.
-      return not context['url'].startswith('chrome-extension://')
-    data = self._browser_backend.Request('', timeout=timeout)
-    all_contexts = json.loads(data)
-    tabs = filter(_IsTab, all_contexts)
-    return tabs
-
-  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