Data reduction proxy enabled/disabled UMA for all platforms

components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.cc

 // Copyright 2014 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.
 
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/prefs/pref_member.h"
 #include "base/prefs/pref_service.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_service.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_params.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_pref_names.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_switches.h"
 #include "net/base/network_change_notifier.h"
 
 namespace {
 
 // Key of the UMA DataReductionProxy.StartupState histogram.
 const char kUMAProxyStartupStateHistogram[] =
     "DataReductionProxy.StartupState";
 
+void RecordSettingsEnabledState(
+    data_reduction_proxy::DataReductionSettingsEnabledAction action) {
+  UMA_HISTOGRAM_ENUMERATION(
+      "DataReductionProxy.EnabledState", action,
+      data_reduction_proxy::DATA_REDUCTION_SETTINGS_ACTION_BOUNDARY);
+}
+
 }  // namespace
 
 namespace data_reduction_proxy {
 
 const char kDataReductionPassThroughHeader[] =
     "Chrome-Proxy: pass-through\nCache-Control: no-cache";
 
 DataReductionProxySettings::DataReductionProxySettings()
     : unreachable_(false),
       deferred_initialization_(false),
@@ skipping 210 matching lines @@
   // related prefs.
   if (!prefs)
     return;
   // TODO(marq): Consider moving this so stats are wiped the first time the
   // proxy settings are actually (not maybe) turned on.
   if (spdy_proxy_auth_enabled_.GetValue() &&
       !prefs->GetBoolean(prefs::kDataReductionProxyWasEnabledBefore)) {
     prefs->SetBoolean(prefs::kDataReductionProxyWasEnabledBefore, true);
     ResetDataReductionStatistics();
   }
+  if (!at_startup) {
+    if (IsDataReductionProxyEnabled())
+      RecordSettingsEnabledState(DATA_REDUCTION_SETTINGS_ACTION_OFF_TO_ON);
+    else
+      RecordSettingsEnabledState(DATA_REDUCTION_SETTINGS_ACTION_ON_TO_OFF);
+  }
   // Configure use of the data reduction proxy if it is enabled.
   if (at_startup && !data_reduction_proxy_service_->Initialized())
     deferred_initialization_ = true;
   else
     UpdateIOData(at_startup);
 }
 
 DataReductionProxyEventStore* DataReductionProxySettings::GetEventStore()
     const {
   if (data_reduction_proxy_service_)
@@ skipping 88 matching lines @@
     int64* received_content_length,
     int64* last_update_time) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(data_reduction_proxy_service_->compression_stats());
 
   data_reduction_proxy_service_->compression_stats()->GetContentLengths(
       days, original_content_length, received_content_length, last_update_time);
 }
 
 }  // namespace data_reduction_proxy