Add simple pepper plugin telemetry test

tools/perf/page_sets/tough_scheduling_cases.py

 # Copyright 2014 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.
 # pylint: disable=W0401,W0614
 from telemetry.page.actions.all_page_actions import *
 from telemetry.page import page as page_module
 from telemetry.page import page_set as page_set_module
 
 
 class ToughSchedulingCasesPage(page_module.Page):
@@ skipping 300 matching lines @@
         'scrollable_element_function': '''
           function(callback) {
             callback(document.getElementById('card'));
           }''',
         'scroll_requires_touch': True,
         'direction': 'up',
         'speed': 150,
         'scroll_distance_function': 'function() { return 400; }'
       }))
 
+class Page21(ToughSchedulingCasesPage):
+
+  """ Why: Simple pepper plugin for touch drawing """
+
+  def __init__(self, page_set):
+    super(Page21, self).__init__(
+        url='file://tough_scheduling_cases/simple_pepper_plugin.html',
+        page_set=page_set)
+
+  def RunSmoothness(self, action_runner):
+    # Wait until the page and the plugin module are loaded.
+    action_runner.RunAction(WaitAction(
+      {
+        'javascript': ('pageLoaded === true && moduleLoaded === true')
+      }))
+    action_runner.RunAction(ScrollAction(
+      {
+            'scroll_requires_touch': True,
+            'direction': 'up',
+            'top_start_percentage': 0.3,
+            'speed': 200,
+            'scroll_distance_function': 'function() { return 500; }',
+      }))
+
 class EmptyTouchHandlerPage(ToughSchedulingCasesPage):
 
   """ Why: Scrolling on a page with a touch handler that consumes no events but
       may be slow """
 
   def __init__(self, name, desktop, slow_handler, bounce, page_set):
     super(EmptyTouchHandlerPage, self).__init__(
       url='file://tough_scheduling_cases/empty_touch_handler' +
         ('_desktop' if desktop else '') + '.html?' + name,
       page_set=page_set)
@@ skipping 65 matching lines @@
       'file://tough_scheduling_cases/raf_animation.html',
       self))
     # Why: Stress test for the scheduler
     self.AddPage(ToughSchedulingCasesPage(
       'file://tough_scheduling_cases/raf_touch_animation.html',
       self))
     self.AddPage(Page17(self))
     self.AddPage(Page18(self))
     self.AddPage(Page19(self))
     self.AddPage(Page20(self))
+    self.AddPage(Page21(self))
     # Why: Baseline for scrolling in the presence of a no-op touch handler
     self.AddPage(EmptyTouchHandlerPage(
       name='baseline',
       desktop=False,
       slow_handler=False,
       bounce=False,
       page_set=self))
     # Why: Slow handler blocks scroll start
     self.AddPage(EmptyTouchHandlerPage(
       name='slow_handler',
@@ skipping 25 matching lines @@
       bounce=True,
       page_set=self))
     # Why: Scroll bounce with slow handler on desktop, blocks only once until
     # ACK timeout.
     self.AddPage(EmptyTouchHandlerPage(
       name='bounce_desktop_slow_handler',
       desktop=True,
       slow_handler=True,
       bounce=True,
       page_set=self))
-