Flag to clear data savings when Chrome starts up.

components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.cc

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.cc
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.cc b/components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.cc
index 57247f600c6724c5ed9268d8fcaecba4436e9788..92a62f824e1ea3147c6be291bde0a83e3a7d072b 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.cc
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.cc
@@ -5,6 +5,7 @@
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.h"
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/prefs/pref_change_registrar.h"
@@ -14,6 +15,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
 #include "base/values.h"
+#include "components/data_reduction_proxy/core/common/data_reduction_proxy_switches.h"
 
 namespace data_reduction_proxy {
 
@@ -70,6 +72,33 @@ void DataReductionProxyStatisticsPrefs::Init() {
   InitListPref(data_reduction_proxy::prefs::
                kDailyOriginalContentLengthWithDataReductionProxyEnabled);
 
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+      data_reduction_proxy::switches::kClearDataReductionProxyDataSavings)) {
+    list_pref_map_.get(data_reduction_proxy::prefs::

[bengr, 2015/03/16 22:54:17]

Please move this to a function called ClearStatistics, or something like that.
E.g.:

if (base::CommandLine::ForCurrentProcess()->HasSwitch(...))
  ClearStatistics();

[Not at Google. Contact bengr, 2015/03/16 23:25:27]

Done.

+        kDailyContentLengthHttpsWithDataReductionProxyEnabled)->Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyContentLengthLongBypassWithDataReductionProxyEnabled)->Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyContentLengthShortBypassWithDataReductionProxyEnabled)->Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyContentLengthUnknownWithDataReductionProxyEnabled)->Clear();
+    list_pref_map_.get(
+        data_reduction_proxy::prefs::kDailyContentLengthViaDataReductionProxy)->
+            Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyContentLengthWithDataReductionProxyEnabled)->Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyHttpOriginalContentLength)->Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyHttpReceivedContentLength)->Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyOriginalContentLengthViaDataReductionProxy)->Clear();
+    list_pref_map_.get(data_reduction_proxy::prefs::
+        kDailyOriginalContentLengthWithDataReductionProxyEnabled)->Clear();
+
+    WritePrefs();
+  }
+
   pref_change_registrar_->Init(pref_service_);
   pref_change_registrar_->Add(prefs::kUpdateDailyReceivedContentLengths,
       base::Bind(&DataReductionProxyStatisticsPrefs::OnUpdateContentLengths,