Reuse same browser for all pages in rasterize_and_record_micro

tools/perf/measurements/rasterize_and_record_micro.py

 # Copyright 2013 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 sys
 import time
 
 from telemetry.core.util import TimeoutException
 from telemetry.page import page_measurement
 from telemetry.page import page_test
 
 class RasterizeAndRecordMicro(page_measurement.PageMeasurement):
   def __init__(self):
-    super(RasterizeAndRecordMicro, self).__init__('', True)
+    super(RasterizeAndRecordMicro, self).__init__('')
     self._chrome_branch_number = None
 
   @classmethod
   def AddCommandLineArgs(cls, parser):
     parser.add_option('--start-wait-time', type='float',
                       default=2,
                       help='Wait time before the benchmark is started '
                       '(must be long enought to load all content)')
     parser.add_option('--rasterize-repeat', type='int',
                       default=100,
@@ skipping 103 matching lines @@
       results.Add('pixels_rasterized_with_non_solid_color', 'pixels',
           pixels_rasterized_with_non_solid_color)
       results.Add('pixels_rasterized_as_opaque', 'pixels',
           pixels_rasterized_as_opaque)
       results.Add('total_layers', 'count', total_layers)
       results.Add('total_picture_layers', 'count', total_picture_layers)
       results.Add('total_picture_layers_with_no_content', 'count',
           total_picture_layers_with_no_content)
       results.Add('total_picture_layers_off_screen', 'count',
           total_picture_layers_off_screen)