Port perf.py's _LoginToGoogleAccount to chrome_remote_control

tools/chrome_remote_control/chrome_remote_control/google_credentials_backend.py

Index: tools/chrome_remote_control/chrome_remote_control/google_credentials_backend.py
diff --git a/tools/chrome_remote_control/chrome_remote_control/google_credentials_backend.py b/tools/chrome_remote_control/chrome_remote_control/google_credentials_backend.py
new file mode 100644
index 0000000000000000000000000000000000000000..cacf799971db3550330ba8377bf82581c1dc4ea6
--- /dev/null
+++ b/tools/chrome_remote_control/chrome_remote_control/google_credentials_backend.py
@@ -0,0 +1,84 @@
+# 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 chrome_remote_control
+from chrome_remote_control.credentials_backend import CredentialsBackend
+
+class GoogleCredentialsBackend(CredentialsBackend):
+  label = 'google'
+
+  def __init__(self, browser_credentials):
+    super(GoogleCredentialsBackend, self).__init__(browser_credentials)
+    self._logged_in = False
+
+  def LoginNeeded(self, tab):
+    if not self._logged_in:
+      self._logged_in = self._LoginToGoogleAccount(tab)
+
+  def LoginNoLongerNeeded(self, tab):
+    pass
+
+  def GoogleAccountsLogin(self, username, password, tab, url=None):
+    """Log into Google Accounts.
+
+    Attempts to login to Google by entering the username/password into the
+    google login page and click submit button.
+
+    Args:
+      username: users login input.
+      password: users login password input.
+      url: an alternative url for login page, if None, original one will be
+      used.
+    """
+    url = url or 'https://accounts.google.com/'
+
+    try:
+      logging.info('Loading %s...', url)
+      tab.page.Navigate(url)
+      form_id = 'gaia_loginform'
+      self.WaitForFormToLoad(form_id, tab)
+      tab.WaitForDocumentReadyStateToBeInteractiveOrBetter()
+      logging.info('Loaded page: %s', url)
+
+      email_id = 'document.getElementById("Email").value = "%s"; ' % username
+      password = 'document.getElementById("Passwd").value = "%s"; ' % password
+      tab.runtime.Execute(email_id)
+      tab.runtime.Execute(password)
+
+      self.SubmitFormAndWait(form_id, tab)
+
+      return True
+    except chrome_remote_control.TimeoutException:
+      logging.warning('Timed out while loading: %s', url)
+    return False
+
+
+  def _LoginToGoogleAccount(self, tab):
+    """Logs in to a test Google account.
+
+    Login with user-defined credentials if they exist.
+    Else fail.
+
+    Raises:
+      RuntimeError: if could not get credential information.
+    """
+    config = self.browser_credentials.GetConfig(
+        {'google_username': None,
+         'google_password': None,
+         'google_account_url': 'https://accounts.google.com/'})
+    google_account_url = config.get('google_account_url')
+    username = config.get('google_username')
+    password = config.get('google_password')
+    if username and password:
+      logging.info(
+          'Using google account credential from %s',
+          self.browser_credentials.GetCredentialsConfigFile())
+    else:
+      message = 'No credentials could be found. ' \
+                'Please specify credential information in %s.' \
+                % self.browser_credentials.GetCredentialsConfigFile()
+      raise RuntimeError(message)
+    return self.GoogleAccountsLogin(username, password, tab,
+                                    url=google_account_url)