Add a history state update example to key_silk_cases

tools/perf/page_sets/key_silk_cases.py

Index: tools/perf/page_sets/key_silk_cases.py
diff --git a/tools/perf/page_sets/key_silk_cases.py b/tools/perf/page_sets/key_silk_cases.py
index 7ed1a72099061783111e1ef1abc1b4402fbcf2fb..a271340b912232fcc7216382dbbd159751a260e6 100644
--- a/tools/perf/page_sets/key_silk_cases.py
+++ b/tools/perf/page_sets/key_silk_cases.py
@@ -564,6 +564,58 @@ class Page26(KeySilkCasesPage):
     interaction.End()
 
 
+class SVGIconRaster(KeySilkCasesPage):
+
+  """ Why: Mutating SVG icons; these paint storm and paint slowly. """
+
+  def __init__(self, page_set):
+    super(SVGIconRaster, self).__init__(
+      url='http://wiltzius.github.io/shape-shifter/',

[Sami, 2014/07/08 11:18:37]

This is from a different patch, right? It's not in the .wpr list at least.

+      page_set=page_set)
+
+  def RunNavigateSteps(self, action_runner):
+    action_runner.NavigateToPage(self)
+    action_runner.WaitForJavaScriptCondition(
+        'loaded = true')
+    action_runner.Wait(1)
+
+  def RunSmoothness(self, action_runner):
+    for i in xrange(9):
+      button_func = ('document.getElementById("demo").$.'
+                     'buttons.children[%d]') % i
+      interaction = action_runner.BeginInteraction(
+            'Action_TapAction', is_smooth=True)
+      action_runner.TapElement(element_function=button_func)
+      action_runner.Wait(1)
+      interaction.End()
+
+
+class UpdateHistoryState(KeySilkCasesPage):
+
+  """ Why: Modern apps often update history state, which currently is janky."""
+
+  def __init__(self, page_set):
+    super(UpdateHistoryState, self).__init__(
+      url='http://wiltzius.github.io/janky-history-update/index.html',
+      page_set=page_set)
+
+  def RunNavigateSteps(self, action_runner):
+    action_runner.NavigateToPage(self)
+    action_runner.ExecuteJavaScript('''
+        window.requestAnimationFrame(function() {
+            window.__history_state_loaded = true;
+          });
+        ''')
+    action_runner.WaitForJavaScriptCondition(
+        'window.__history_state_loaded == true;')
+
+  def RunSmoothness(self, action_runner):
+    interaction = action_runner.BeginInteraction('animation_interaction',
+        is_smooth=True)
+    action_runner.Wait(5) # JS runs the animation continuously on the page
+    interaction.End()
+
+
 class KeySilkCasesPageSet(page_set_module.PageSet):
 
   """ Pages hand-picked for project Silk. """
@@ -601,3 +653,6 @@ class KeySilkCasesPageSet(page_set_module.PageSet):
     self.AddPage(Page24(self))
     self.AddPage(Page25(self))
     self.AddPage(Page26(self))
+    self.AddPage(SVGIconRaster(self))
+    self.AddPage(UpdateHistoryState(self))
+