chrome/browser/plugins/plugins_field_trial.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/plugins/plugins_field_trial.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/metrics/field_trial.h"
   9 #include "chrome/common/chrome_switches.h"
  10
  11 ContentSetting PluginsFieldTrial::EffectiveContentSetting(
  12     ContentSettingsType type,
  13     ContentSetting setting) {
  14   if (type != CONTENT_SETTINGS_TYPE_PLUGINS)
  15     return setting;
  16
  17   // For Plugins, ASK is obsolete. Show as BLOCK to reflect actual behavior.
  18   if (setting == ContentSetting::CONTENT_SETTING_ASK)
  19     return ContentSetting::CONTENT_SETTING_BLOCK;
  20
  21   // For Plugins, allow flag to override displayed content setting.
  22   if (setting == ContentSetting::CONTENT_SETTING_ALLOW &&
  23       IsForcePluginPowerSaverEnabled()) {
  24     return ContentSetting::CONTENT_SETTING_DETECT_IMPORTANT_CONTENT;
  25   }
  26
  27   return setting;
  28 }
  29
  30 bool PluginsFieldTrial::IsForcePluginPowerSaverEnabled() {
  31   const base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
  32   if (cl->HasSwitch(switches::kDisablePluginPowerSaver))
  33     return false;
  34   if (cl->HasSwitch(switches::kEnablePluginPowerSaver))
  35     return true;
  36
  37   std::string group_name =
  38       base::FieldTrialList::FindFullName("ForcePluginPowerSaver");
  39   return !group_name.empty() && group_name != "Disabled";
  40 }