telemetry: Don't over-communicate in Android Systrace profiler

tools/telemetry/telemetry/core/platform/profiler/android_systrace_profiler_unittest.py

Index: tools/telemetry/telemetry/core/platform/profiler/android_systrace_profiler_unittest.py
diff --git a/tools/telemetry/telemetry/core/platform/profiler/android_systrace_profiler_unittest.py b/tools/telemetry/telemetry/core/platform/profiler/android_systrace_profiler_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..6b84a219be9170667bc78f409847508704749668
--- /dev/null
+++ b/tools/telemetry/telemetry/core/platform/profiler/android_systrace_profiler_unittest.py
@@ -0,0 +1,30 @@
+# 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.
+import os
+import shutil
+import tempfile
+import zipfile
+
+from telemetry import test
+from telemetry.core.platform.profiler import android_systrace_profiler
+from telemetry.unittest import tab_test_case
+
+
+class TestAndroidSystraceProfiler(tab_test_case.TabTestCase):
+  @test.Enabled('android')
+  def testSystraceProfiler(self):
+    try:
+      out_dir = tempfile.mkdtemp()
+      # pylint: disable=W0212
+      profiler = android_systrace_profiler.AndroidSystraceProfiler(
+          self._browser._browser_backend,
+          self._browser._platform_backend,
+          os.path.join(out_dir, 'systrace'),
+          {})
+      result = profiler.CollectProfile()[0]
+      assert zipfile.is_zipfile(result)
+      with zipfile.ZipFile(result) as z:
+        self.assertEquals(len(z.namelist()), 2)
+    finally:
+      shutil.rmtree(out_dir)