[telemetry] Add support for BenchmarkResults that vary from page to page

tools/telemetry/telemetry/block_page_benchmark_results.py

Index: tools/telemetry/telemetry/block_page_benchmark_results.py
diff --git a/tools/telemetry/telemetry/block_page_benchmark_results.py b/tools/telemetry/telemetry/block_page_benchmark_results.py
new file mode 100644
index 0000000000000000000000000000000000000000..f76394cd9058cf3bef617d79e999cb914e3a914f
--- /dev/null
+++ b/tools/telemetry/telemetry/block_page_benchmark_results.py
@@ -0,0 +1,32 @@
+# 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.
+import os
+
+from telemetry.page_benchmark_results import PageBenchmarkResults
+
+class BlockPageBenchmarkResults(PageBenchmarkResults):
+  def __init__(self, output_file):
+    super(BlockPageBenchmarkResults, self).__init__()
+    self._output_file = output_file
+
+  def DidMeasurePage(self):
+    page_values = self.values_for_current_page
+
+    lines = ['url: %s' %
+             self.values_for_current_page.page.url]
+    sorted_measurement_names = page_values.measurement_names
+    sorted_measurement_names.sort()
+
+    for measurement_name in sorted_measurement_names:
+      value = page_values.FindValueByMeasurementName(measurement_name)
+      lines.append('%s (%s): %s' %
+                 (measurement_name,
+                  value.units,
+                  value.output_value))
+    for line in lines:
+      self._output_file.write(line)
+      self._output_file.write(os.linesep)
+    self._output_file.write(os.linesep)
+
+    super(BlockPageBenchmarkResults, self).DidMeasurePage()