Fix bug in percentage increase computation for cache sensitivity analysis,

chrome/browser/chrome_browser_field_trials.cc

Index: chrome/browser/chrome_browser_field_trials.cc
===================================================================
--- chrome/browser/chrome_browser_field_trials.cc	(revision 159725)
+++ chrome/browser/chrome_browser_field_trials.cc	(working copy)
@@ -573,13 +573,19 @@
 #if (defined(OS_ANDROID) || defined(OS_IOS))
   base::FieldTrial::Probability sensitivity_analysis_probability = 0;
 #else
-  base::FieldTrial::Probability sensitivity_analysis_probability = 20;
+  base::FieldTrial::Probability sensitivity_analysis_probability = 8;

[rvargas (doing something else), 2012/10/03 02:01:09]

50% of canary is delayed? can we lower this percentage?

[tburkard, 2012/10/03 16:47:21]

Eventually, yes.  However, at this point, I need more data.  The data coming in
so far already shows that the impact on users is negligible (~2% slowdown), so
this is not a big deal in terms of user impact.  I want to leave this in Dev for
a week to get better data, then I'll reduce it.  SG?

 #endif
 
   scoped_refptr<base::FieldTrial> trial(
       base::FieldTrialList::FactoryGetFieldTrial("CacheSensitivityAnalysis",
                                                  kDivisor, "No",
                                                  2012, 12, 31, NULL));
-  trial->AppendGroup("Control", sensitivity_analysis_probability);
-  trial->AppendGroup("100", sensitivity_analysis_probability);
+  trial->AppendGroup("ControlA", sensitivity_analysis_probability);
+  trial->AppendGroup("ControlB", sensitivity_analysis_probability);
+  trial->AppendGroup("100A", sensitivity_analysis_probability);
+  trial->AppendGroup("100B", sensitivity_analysis_probability);
+  trial->AppendGroup("200A", sensitivity_analysis_probability);
+  trial->AppendGroup("200B", sensitivity_analysis_probability);
+  trial->AppendGroup("400A", sensitivity_analysis_probability);
+  trial->AppendGroup("400B", sensitivity_analysis_probability);
 }