Refactor BenchmarkResult.Add to take enum for data_type

tools/perf/measurements/rasterize_and_record.py

Index: tools/perf/measurements/rasterize_and_record.py
===================================================================
--- tools/perf/measurements/rasterize_and_record.py	(revision 222891)
+++ tools/perf/measurements/rasterize_and_record.py	(working copy)
@@ -5,8 +5,13 @@
 import time
 
 from metrics import smoothness
+from telemetry.core import util
 from telemetry.page import page_measurement
 
+# Get build scripts into our path.
+util.AddDirToPythonPath(util.GetChromiumSrcDir(), 'build', 'util', 'lib')
+from common import perf_result_data_type # pylint: disable=F0401
+
 class StatsCollector(object):
   def __init__(self, timeline):
     """
@@ -177,16 +182,16 @@
 
     results.Add('best_rasterize_time', 'seconds',
                 collector.total_best_rasterize_time / 1.e3,
-                data_type='unimportant')
+                data_type=perf_result_data_type.UNIMPORTANT)
     results.Add('best_record_time', 'seconds',
                 collector.total_best_record_time / 1.e3,
-                data_type='unimportant')
+                data_type=perf_result_data_type.UNIMPORTANT)
     results.Add('total_pixels_rasterized', 'pixels',
                 collector.total_pixels_rasterized,
-                data_type='unimportant')
+                data_type=perf_result_data_type.UNIMPORTANT)
     results.Add('total_pixels_recorded', 'pixels',
                 collector.total_pixels_recorded,
-                data_type='unimportant')
+                data_type=perf_result_data_type.UNIMPORTANT)
 
     if self.options.report_all_results:
       for k, v in rendering_stats.iteritems():