components/content_settings/core/browser/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 "components/content_settings/core/browser/plugins_field_trial.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/metrics/field_trial.h"
   9 #include "components/plugins/common/plugins_switches.h"
  10
  11 using base::FieldTrialList;
  12
  13 namespace content_settings {
  14
  15 // static
  16 const char PluginsFieldTrial::kForceFieldTrial[] = "ForcePluginPowerSaver";
  17
  18 // static
  19 const char PluginsFieldTrial::kEnableFieldTrial[] = "PluginPowerSaver";
  20
  21 // static
  22 ContentSetting PluginsFieldTrial::EffectiveContentSetting(
  23     ContentSettingsType type,
  24     ContentSetting setting) {
  25   if (type != CONTENT_SETTINGS_TYPE_PLUGINS)
  26     return setting;
  27
  28   // For Plugins, ASK is obsolete. Show as BLOCK to reflect actual behavior.
  29   if (setting == ContentSetting::CONTENT_SETTING_ASK)
  30     return ContentSetting::CONTENT_SETTING_BLOCK;
  31
  32   return setting;
  33 }
  34
  35 // static
  36 bool PluginsFieldTrial::IsPluginPowerSaverEnabled() {
  37   std::string enable_group = FieldTrialList::FindFullName(kEnableFieldTrial);
  38   std::string force_group = FieldTrialList::FindFullName(kForceFieldTrial);
  39
  40   const base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
  41   if (cl->HasSwitch(plugins::switches::kDisablePluginPowerSaver))
  42     return false;
  43   if (cl->HasSwitch(plugins::switches::kEnablePluginPowerSaver))
  44     return true;
  45
  46   if (!enable_group.empty() && enable_group != "Disabled")
  47     return true;
  48   if (!force_group.empty() && force_group != "Disabled")
  49     return true;
  50
  51   return false;
  52 }
  53
  54 // static
  55 ContentSetting PluginsFieldTrial::GetDefaultPluginsContentSetting() {
  56   return IsPluginPowerSaverEnabled() ?
  57       ContentSetting::CONTENT_SETTING_DETECT_IMPORTANT_CONTENT :
  58       ContentSetting::CONTENT_SETTING_ALLOW;
  59 }
  60
  61 }  // namespace content_settings