Add ActionRunner wrapper for the remaining less used actions (try 2):

tools/telemetry/telemetry/page/actions/pinch_unittest.py

Index: tools/telemetry/telemetry/page/actions/pinch_unittest.py
diff --git a/tools/telemetry/telemetry/page/actions/pinch_unittest.py b/tools/telemetry/telemetry/page/actions/pinch_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..c510082506089ced33a8edd44a986fd39dea2a1e
--- /dev/null
+++ b/tools/telemetry/telemetry/page/actions/pinch_unittest.py
@@ -0,0 +1,40 @@
+# 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.
+
+from telemetry.page.actions import action_runner as action_runner_module
+from telemetry.page.actions.gesture_action import GestureAction
+from telemetry.unittest import tab_test_case
+
+
+class PinchActionTest(tab_test_case.TabTestCase):
+  def setUp(self):
+    super(PinchActionTest, self).setUp()
+
+  def testPinchByApiCalledWithCorrectArguments(self):
+    self.Navigate('blank.html')
+    if not GestureAction.IsGestureSourceTypeSupported(self._tab, 'touch'):
+      return
+
+    action_runner = action_runner_module.ActionRunner(self._tab)
+    action_runner.ExecuteJavaScript('''
+        chrome.gpuBenchmarking.pinchBy = function(
+            scaleFactor, anchorLeft, anchorTop, callback, speed) {
+          window.__test_scaleFactor = scaleFactor;
+          window.__test_anchorLeft = anchorLeft;
+          window.__test_anchorTop = anchorTop;
+          window.__test_callback = callback;
+          window.__test_speed = speed;
+          window.__pinchActionDone = true;
+        };''')
+    action_runner.PinchPage(scale_factor=2)
+    self.assertEqual(
+        2, action_runner.EvaluateJavaScript('window.__test_scaleFactor'))
+    self.assertTrue(
+        action_runner.EvaluateJavaScript('!isNaN(window.__test_anchorLeft)'))
+    self.assertTrue(
+        action_runner.EvaluateJavaScript('!isNaN(window.__test_anchorTop)'))
+    self.assertTrue(
+        action_runner.EvaluateJavaScript('!!window.__test_callback'))
+    self.assertEqual(
+        800, action_runner.EvaluateJavaScript('window.__test_speed'))