Add support for codepen to form_based_credentials_background

tools/telemetry/telemetry/core/backends/codepen_credentials_backend.py

Index: tools/telemetry/telemetry/core/backends/codepen_credentials_backend.py
diff --git a/tools/telemetry/telemetry/core/backends/facebook_credentials_backend.py b/tools/telemetry/telemetry/core/backends/codepen_credentials_backend.py
similarity index 54%
copy from tools/telemetry/telemetry/core/backends/facebook_credentials_backend.py
copy to tools/telemetry/telemetry/core/backends/codepen_credentials_backend.py
index 2b66f9dc1063fbd96616f4d00da097672ebdccc7..5aed5d6befd688e716b83c9b7f7c228f0dd5d39e 100644
--- a/tools/telemetry/telemetry/core/backends/facebook_credentials_backend.py
+++ b/tools/telemetry/telemetry/core/backends/codepen_credentials_backend.py
@@ -1,33 +1,37 @@
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright 2014 The Chromium Authors. All rights reserved.

[tonyg, 2014/08/20 17:37:17]

Let's split the tools/telemetry/* changes into a new CL and get it solid first.
Then we'll land the page set changes separately.

 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from telemetry.core.backends import form_based_credentials_backend
 
 
-class FacebookCredentialsBackend(
+class CodePenCredentialsBackend(
     form_based_credentials_backend.FormBasedCredentialsBackend):
   def IsAlreadyLoggedIn(self, tab):
+    # Redirects to sign up page for logged in users.
     return tab.EvaluateJavaScript(
-        'document.getElementById("fbNotificationsList")!== null || '
-        'document.getElementById("m_home_notice")!== null')
+        'document.querySelector(".login-area")===null')
 
   @property
   def credentials_type(self):

[tonyg, 2014/08/20 17:37:17]

Not for this CL, but just thinking aloud that it would be nice if these
properties were specified in the credentials file itself instead of hardcoded in
python like this.

-    return 'facebook'
+    return 'codepen'
 
   @property
   def url(self):
-    return 'http://www.facebook.com/'
+    return 'https://codepen.io/login'
 
   @property
   def login_form_id(self):
-    return 'login_form'
+    return 'login-login-form'
+
+  @property
+  def login_button_id(self):
+    return 'log-in-button'
 
   @property
   def login_input_id(self):
-    return 'email'
+    return 'login-email-field'
 
   @property
   def password_input_id(self):
-    return 'pass'
+    return 'login-password-field_'