Telemetry: Add option to create a dirty profile as part of a test run

tools/telemetry/telemetry/core/browser_unittest.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 logging
 import unittest
 
 from telemetry.core import browser_finder
 from telemetry.test import options_for_unittests
 
 class BrowserTest(unittest.TestCase):
   def testBrowserCreation(self):
     options = options_for_unittests.GetCopy()
     browser_to_create = browser_finder.FindBrowser(options)
     if not browser_to_create:
@@ skipping 62 matching lines @@
 
   def testCloseReferencedTab(self):
     options = options_for_unittests.GetCopy()
     browser_to_create = browser_finder.FindBrowser(options)
     with browser_to_create.Create() as b:
       b.tabs.New()
       tab = b.tabs[0]
       tab.Navigate('http://www.google.com/')
       tab.Close()
       self.assertEquals(1, len(b.tabs))
+
+  def testDirtyProfileCreation(self):
+    options = options_for_unittests.GetCopy()
+
+    # Dirty profile creation is currently only implemented on Desktop.
+    is_running_on_desktop = not (
+        options.browser.startswith('android') or
+        options.browser.startswith('cros'))
+    if not is_running_on_desktop:
+      logging.warn("Desktop-only test, skipping.")
+      return
+
+    options.profile_type = 'small_profile'
+    browser_to_create = browser_finder.FindBrowser(options)
+    with browser_to_create.Create() as b:
+      self.assertEquals(1, len(b.tabs))