Backend for new run_chromium_analysis CT task

ct/isolates/chromium_analysis.isolate

Index: ct/isolates/chromium_analysis.isolate
diff --git a/ct/isolates/capture_skps_from_pdfs.isolate b/ct/isolates/chromium_analysis.isolate
similarity index 64%
copy from ct/isolates/capture_skps_from_pdfs.isolate
copy to ct/isolates/chromium_analysis.isolate
index efb9e942f0ecb002bd0e1135c11b7d8f2479de13..7fc424a8801288a58a46f6de0548dbc2074f9443 100644
--- a/ct/isolates/capture_skps_from_pdfs.isolate
+++ b/ct/isolates/chromium_analysis.isolate
@@ -9,16 +9,19 @@
     ['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)',
         ],
       },
     }],