Backend for new run_chromium_analysis CT task

ct/isolates/chromium_analysis.isolate

 # Copyright (c) 2016 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.
 {
   'includes': [
     'py.isolate',
   ],
   'conditions': [
     ['OS=="linux"', {
       'variables': {
         'files': [
-          '../../../../../bin/capture_skps_from_pdfs',
+          '../../../../../bin/run_chromium_analysis',
         ],
         'command': [
-          '../../../../../bin/capture_skps_from_pdfs',
+          '../../../../../bin/run_chromium_analysis',
           '-logtostderr',
           '--start_range=<(START_RANGE)',
           '--num=<(NUM)',
           '--pageset_type=<(PAGESET_TYPE)',
           '--chromium_build=<(CHROMIUM_BUILD)',
-          '--run_id=<(RUN_ID)'
+          '--run_id=<(RUN_ID)',
+          '--benchmark_name=<(BENCHMARK)',
+          '--benchmark_extra_args=<(BENCHMARK_ARGS)',
+          '--browser_extra_args=<(BROWSER_EXTRA_ARGS)',
         ],
       },
     }],
   ]
 }