Add robohornet as an animation test

tools/telemetry/telemetry/wait_interaction.py

Index: tools/telemetry/telemetry/wait_interaction.py
diff --git a/tools/telemetry/telemetry/wait_interaction.py b/tools/telemetry/telemetry/wait_interaction.py
new file mode 100644
index 0000000000000000000000000000000000000000..0d0923b210de45b1dee303e7f5c350a3f66b1d5d
--- /dev/null
+++ b/tools/telemetry/telemetry/wait_interaction.py
@@ -0,0 +1,58 @@
+# 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.
+from telemetry import page_interaction
+from telemetry import util
+
+class WaitInteraction(page_interaction.PageInteraction):
+  def __init__(self, attributes=None):
+    super(WaitInteraction, self).__init__(attributes)
+
+  def PerformInteraction(self, page, tab):
+    duration = 10
+    if hasattr(self, 'duration'):
+      duration = self.duration
+
+    wait_js = """
+      window.__renderingStatsDeltas = null;
+
+      var getTimeMs = (function() {
+        if (window.performance)
+          return (performance.now       ||
+                  performance.mozNow    ||
+                  performance.msNow     ||
+                  performance.oNow      ||
+                  performance.webkitNow).bind(window.performance);
+        else
+          return function() { return new Date().getTime(); };
+      })();
+
+      var getRenderingStats = function() {
+        var renderingStats = {};
+        if (chrome &&
+            chrome.gpuBenchmarking &&
+            chrome.gpuBenchmarking.renderingStats)
+          renderingStats = chrome.gpuBenchmarking.renderingStats();
+        renderingStats.totalTimeInSeconds = getTimeMs() / 1000;
+        return renderingStats;
+      }
+
+      var initialStats = getRenderingStats();
+
+      var waitFinishedCallback = function(init) {
+        return function() {
+          var final = getRenderingStats();
+          for (var key in final)
+            final[key] -= init[key];
+          window.__renderingStatsDeltas = final;
+        };
+      }
+
+      window.setTimeout(waitFinishedCallback(initialStats), %d);
+    """ % (duration * 1000)
+
+    tab.runtime.Evaluate(wait_js)
+
+    # Poll for scroll benchmark completion.
+    util.WaitFor(lambda: tab.runtime.Evaluate(
+        'window.__renderingStatsDeltas'), 60)