Revert 177087.

tools/telemetry/telemetry/tab_backend.py

Index: tools/telemetry/telemetry/tab_backend.py
===================================================================
--- tools/telemetry/telemetry/tab_backend.py	(revision 177224)
+++ tools/telemetry/telemetry/tab_backend.py	(working copy)
@@ -1,298 +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 logging
-import socket
-
-from telemetry import inspector_console
-from telemetry import inspector_page
-from telemetry import inspector_runtime
-from telemetry import inspector_timeline
-from telemetry import png_bitmap
-from telemetry import tab_crash_exception
-from telemetry import util
-from telemetry import websocket
-
-class InspectorException(Exception):
-  pass
-
-class TabBackend(object):
-  def __init__(self, browser, browser_backend, debugger_url):
-    assert debugger_url
-    self._browser = browser
-    self._browser_backend = browser_backend
-    self._debugger_url = debugger_url
-    self._socket = None
-    self._next_request_id = 0
-    self._domain_handlers = {}
-    self._cur_socket_timeout = 0
-
-    self.__console = None
-    self.__page = None
-    self.__runtime = None
-    self.__timeline = None
-
-  def __del__(self):
-    self._Disconnect()
-
-  def _Connect(self):
-    if self._socket:
-      return
-    self._socket = websocket.create_connection(self._debugger_url)
-
-    self.__console = inspector_console.InspectorConsole(self)
-    self.__page = inspector_page.InspectorPage(self)
-    self.__runtime = inspector_runtime.InspectorRuntime(self)
-    self.__timeline = inspector_timeline.InspectorTimeline(self)
-
-  def _Disconnect(self):
-    for _, handlers in self._domain_handlers.items():
-      _, will_close_handler = handlers
-      will_close_handler()
-    self._domain_handlers = {}
-
-    if self._socket:
-      self._socket.close()
-      self._socket = None
-
-    self.__console = None
-    self.__page = None
-    self.__runtime = None
-    self.__timeline = None
-
-  @property
-  def _console(self):
-    self._Connect()
-    return self.__console
-
-  @property
-  def _page(self):
-    self._Connect()
-    return self.__page
-
-  @property
-  def _runtime(self):
-    self._Connect()
-    return self.__runtime
-
-  @property
-  def _timeline(self):
-    self._Connect()
-    return self.__timeline
-
-  # General public methods.
-
-  @property
-  def browser(self):
-    return self._browser
-
-  @property
-  def url(self):
-    self._Disconnect()
-    return self._browser_backend.tabs.GetTabUrl(self._debugger_url)
-
-  def Activate(self):
-    self._Connect()
-    self._browser_backend.tabs.ActivateTab(self._debugger_url)
-
-  def Close(self):
-    self._Disconnect()
-    self._browser_backend.tabs.CloseTab(self._debugger_url)
-
-  # Public methods implemented in JavaScript.
-
-  def WaitForDocumentReadyStateToBeComplete(self, timeout):
-    util.WaitFor(
-        lambda: self.__runtime.Evaluate('document.readyState') == 'complete',
-        timeout)
-
-  def WaitForDocumentReadyStateToBeInteractiveOrBetter(
-      self, timeout):
-    def IsReadyStateInteractiveOrBetter():
-      rs = self.__runtime.Evaluate('document.readyState')
-      return rs == 'complete' or rs == 'interactive'
-    util.WaitFor(IsReadyStateInteractiveOrBetter, timeout)
-
-  @property
-  def screenshot_supported(self):
-    if self.__runtime.Evaluate(
-        'window.chrome.gpuBenchmarking === undefined'):
-      return False
-
-    if self.__runtime.Evaluate(
-        'window.chrome.gpuBenchmarking.windowSnapshotPNG === undefined'):
-      return False
-
-    return True
-
-  def Screenshot(self, timeout):
-    if self.__runtime.Evaluate(
-        'window.chrome.gpuBenchmarking === undefined'):
-      raise Exception("Browser was not started with --enable-gpu-benchmarking")
-
-    if self.__runtime.Evaluate(
-        'window.chrome.gpuBenchmarking.beginWindowSnapshotPNG === undefined'):
-      raise Exception("Browser does not support window snapshot API.")
-
-    self.__runtime.Evaluate("""
-        if(!window.__telemetry) {
-          window.__telemetry = {}
-        }
-        window.__telemetry.snapshotComplete = false;
-        window.__telemetry.snapshotData = null;
-        window.chrome.gpuBenchmarking.beginWindowSnapshotPNG(
-          function(snapshot) {
-            window.__telemetry.snapshotData = snapshot;
-            window.__telemetry.snapshotComplete = true;
-          }
-        );
-    """)
-
-    def IsSnapshotComplete():
-      return self.__runtime.Evaluate('window.__telemetry.snapshotComplete')
-
-    util.WaitFor(IsSnapshotComplete, timeout)
-
-    snap = self.__runtime.Evaluate("""
-      (function() {
-        var data = window.__telemetry.snapshotData;
-        delete window.__telemetry.snapshotComplete;
-        delete window.__telemetry.snapshotData;
-        return data;
-      })()
-    """)
-    if snap:
-      return png_bitmap.PngBitmap(snap['data'])
-    return None
-
-  # Console public methods.
-
-  @property
-  def message_output_stream(self):  # pylint: disable=E0202
-    return self.__console.message_output_stream
-
-  @message_output_stream.setter
-  def message_output_stream(self, stream):  # pylint: disable=E0202
-    self.__console.message_output_stream = stream
-
-  # Page public methods.
-
-  def PerformActionAndWaitForNavigate(self, action_function, timeout):
-    self.__page.PerformActionAndWaitForNavigate(action_function, timeout)
-
-  def Navigate(self, url, timeout):
-    self.__page.Navigate(url, timeout)
-
-  def GetCookieByName(self, name, timeout):
-    return self.__page.GetCookieByName(name, timeout)
-
-  # Runtime public methods.
-
-  def ExecuteJavascript(self, expr, timeout):
-    self.__runtime.Execute(expr, timeout)
-
-  def EvaluateJavascript(self, expr, timeout):
-    return self.__runtime.Evaluate(expr, timeout)
-
-  # Timeline public methods.
-
-  @property
-  def timeline_events(self):
-    return self.__timeline.timeline_events
-
-  def StartTimelineRecording(self):
-    self.__timeline.Start()
-
-  def StopTimelineRecording(self):
-    self.__timeline.Stop()
-
-  # Methods used internally by other backends.
-
-  def DispatchNotifications(self, timeout=10):
-    self._SetTimeout(timeout)
-    try:
-      data = self._socket.recv()
-    except (socket.error, websocket.WebSocketException):
-      if self._browser_backend.tabs.DoesDebuggerUrlExist(self._debugger_url):
-        return
-      raise tab_crash_exception.TabCrashException()
-
-    res = json.loads(data)
-    logging.debug('got [%s]', data)
-    if 'method' in res:
-      self._HandleNotification(res)
-
-  def _HandleNotification(self, res):
-    mname = res['method']
-    dot_pos = mname.find('.')
-    domain_name = mname[:dot_pos]
-    if domain_name in self._domain_handlers:
-      try:
-        self._domain_handlers[domain_name][0](res)
-      except Exception:
-        import traceback
-        traceback.print_exc()
-    else:
-      logging.debug('Unhandled inspector message: %s', res)
-
-  def SendAndIgnoreResponse(self, req):
-    req['id'] = self._next_request_id
-    self._next_request_id += 1
-    data = json.dumps(req)
-    self._socket.send(data)
-    logging.debug('sent [%s]', data)
-
-  def _SetTimeout(self, timeout):
-    if self._cur_socket_timeout != timeout:
-      self._socket.settimeout(timeout)
-      self._cur_socket_timeout = timeout
-
-  def SyncRequest(self, req, timeout=10):
-    # TODO(nduca): Listen to the timeout argument
-    # pylint: disable=W0613
-    self._SetTimeout(timeout)
-    self.SendAndIgnoreResponse(req)
-
-    while True:
-      try:
-        data = self._socket.recv()
-      except (socket.error, websocket.WebSocketException):
-        if self._browser_backend.tabs.DoesDebuggerUrlExist(self._debugger_url):
-          raise util.TimeoutException(
-            'Timed out waiting for reply. This is unusual.')
-        raise tab_crash_exception.TabCrashException()
-
-      res = json.loads(data)
-      logging.debug('got [%s]', data)
-      if 'method' in res:
-        self._HandleNotification(res)
-        continue
-
-      if res['id'] != req['id']:
-        logging.debug('Dropped reply: %s', json.dumps(res))
-        continue
-      return res
-
-  def RegisterDomain(self,
-      domain_name, notification_handler, will_close_handler):
-    """Registers a given domain for handling notification methods.
-
-    For example, given tab_backend:
-       def OnConsoleNotification(msg):
-          if msg['method'] == 'Console.messageAdded':
-             print msg['params']['message']
-          return
-       def OnConsoleClose(self):
-          pass
-       tab_backend.RegisterDomain('Console',
-                                        OnConsoleNotification, OnConsoleClose)
-       """
-    assert domain_name not in self._domain_handlers
-    self._domain_handlers[domain_name] = (notification_handler,
-                                          will_close_handler)
-
-  def UnregisterDomain(self, domain_name):
-    """Unregisters a previously registered domain."""
-    assert domain_name in self._domain_handlers
-    self._domain_handlers.pop(domain_name)