Snackbar for promoting Data Saver to existing users

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 <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 133 matching lines @@
   }
 }
 
 int64_t DataReductionProxySettings::GetDataReductionLastUpdateTime() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(data_reduction_proxy_service_->compression_stats());
   return
       data_reduction_proxy_service_->compression_stats()->GetLastUpdateTime();
 }
 
+int64_t DataReductionProxySettings::GetTotalHttpContentLengthSaved() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  return data_reduction_proxy_service_->compression_stats()
+             ->GetHttpOriginalContentLength() -
+         data_reduction_proxy_service_->compression_stats()
+             ->GetHttpReceivedContentLength();
+}
+
 void DataReductionProxySettings::SetUnreachable(bool unreachable) {
   unreachable_ = unreachable;
 }
 
 bool DataReductionProxySettings::IsDataReductionProxyUnreachable() {
   DCHECK(thread_checker_.CalledOnValidThread());
   return unreachable_;
 }
 
 PrefService* DataReductionProxySettings::GetOriginalProfilePrefs() {
@@ skipping 206 matching lines @@
     int64_t data_used,
     int64_t original_size) {
   if (!IsDataReductionProxyEnabled())
     return false;
   data_reduction_proxy_service_->compression_stats()->UpdateDataSavings(
       data_usage_host, data_used, original_size);
   return true;
 }
 
 }  // namespace data_reduction_proxy