Initial CL for Data Saver (Flywheel) prompt when cellular network detected

chromeos/chromeos_switches.cc

 // Copyright (c) 2012 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 "chromeos/chromeos_switches.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 
 // TODO(rsorokin): alphabetize all of these switches so they
@@ skipping 304 matching lines @@
 const char kArtifactsDir[] = "artifacts-dir";
 
 // Bypass proxy for captive portal authorization.
 const char kEnableCaptivePortalBypassProxy[] =
     "enable-captive-portal-bypass-proxy";
 
 // Disable automatic timezone update.
 const char kDisableTimeZoneTrackingOption[] =
     "disable-timezone-tracking-option";
 
+// Enable Data Saver prompt on 3G networks.
+const char kEnableDataSaverPrompt[] = "enable-datasaver-prompt";
+
 bool WakeOnWifiEnabled() {
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(kDisableWakeOnWifi);
 }
 
 bool MemoryPressureHandlingEnabled() {
   if ((base::CommandLine::ForCurrentProcess()->HasSwitch(
           chromeos::switches::kDisableMemoryPressureSystemChromeOS)) ||
       (base::FieldTrialList::FindFullName(kMemoryPressureExperimentName) ==
        kMemoryPressureHandlingOff))
     return false;
@@ skipping 31 matching lines @@
     return base::MemoryPressureObserverChromeOS::
         THRESHOLD_AGGRESSIVE_TAB_DISCARD;
   if (option == kAggressiveThreshold)
     return base::MemoryPressureObserverChromeOS::THRESHOLD_AGGRESSIVE;
 
   return base::MemoryPressureObserverChromeOS::THRESHOLD_DEFAULT;
 }
 
 }  // namespace switches
 }  // namespace chromeos