chrome/browser/bookmarks/enhanced_bookmarks_features.cc

   1 // Copyright 2013 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/bookmarks/enhanced_bookmarks_features.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "chrome/common/chrome_switches.h"
  10 #include "components/variations/variations_associated_data.h"
  11
  12 #if !defined(OS_ANDROID) && !defined(OS_IOS)
  13 #include "extensions/common/features/feature.h"
  14 #include "extensions/common/features/feature_provider.h"
  15 #endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
  16
  17 namespace {
  18
  19 const char kFieldTrialName[] = "EnhancedBookmarks";
  20
  21 bool GetBookmarksExperimentExtensionID(std::string* extension_id) {
  22   *extension_id = variations::GetVariationParamValue(kFieldTrialName, "id");
  23   if (extension_id->empty())
  24     return false;
  25
  26 #if defined(OS_ANDROID) || defined(OS_IOS)
  27   return true;
  28 #else
  29   const extensions::FeatureProvider* feature_provider =
  30       extensions::FeatureProvider::GetPermissionFeatures();
  31   extensions::Feature* feature = feature_provider->GetFeature("metricsPrivate");
  32   return feature && feature->IsIdInWhitelist(*extension_id);
  33 #endif  // defined(OS_ANDROID) || defined(OS_IOS)
  34 }
  35
  36 }  // namespace
  37
  38 #if defined(OS_ANDROID)
  39 bool IsEnhancedBookmarkImageFetchingEnabled(const PrefService* user_prefs) {
  40   if (IsEnhancedBookmarksEnabled())
  41     return true;
  42
  43   // Salient images are collected from visited bookmarked pages even if the
  44   // enhanced bookmark feature is turned off. This is to have some images
  45   // available so that in the future, when the feature is turned on, the user
  46   // experience is not a big list of flat colors. However as a precautionary
  47   // measure it is possible to disable this collection of images from finch.
  48   std::string disable_fetching = variations::GetVariationParamValue(
  49       kFieldTrialName, "DisableImagesFetching");
  50   return disable_fetching.empty();
  51 }
  52 #endif  // defined(OS_ANDROID)
  53
  54 bool IsEnhancedBookmarksEnabled() {
  55   std::string extension_id;
  56   return IsEnhancedBookmarksEnabled(&extension_id);
  57 }
  58
  59 bool IsEnhancedBookmarksEnabled(std::string* extension_id) {
  60   // kEnhancedBookmarksExperiment flag could have values "", "1" and "0".
  61   // "0" - user opted out. "1" is only possible on mobile as desktop needs a
  62   // extension id that would not be available by just using the flag.
  63
  64 #if defined(OS_ANDROID) || defined(OS_IOS)
  65   // Tests use command line flag to force enhanced bookmark to be on.
  66   bool opt_in = base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
  67                     switches::kEnhancedBookmarksExperiment) == "1";
  68   if (opt_in)
  69     return true;
  70 #endif  // defined(OS_ANDROID) || defined(OS_IOS)
  71
  72   bool opt_out = base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
  73                      switches::kEnhancedBookmarksExperiment) == "0";
  74
  75   if (opt_out)
  76     return false;
  77
  78   return GetBookmarksExperimentExtensionID(extension_id);
  79 }
  80
  81 bool IsEnableDomDistillerSet() {
  82   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
  83           switches::kEnableDomDistiller)) {
  84     return true;
  85   }
  86   if (variations::GetVariationParamValue(
  87           kFieldTrialName, "enable-dom-distiller") == "1")
  88     return true;
  89
  90   return false;
  91 }
  92
  93 bool IsEnableSyncArticlesSet() {
  94   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
  95           switches::kEnableSyncArticles)) {
  96     return true;
  97   }
  98   if (variations::GetVariationParamValue(
  99           kFieldTrialName, "enable-sync-articles") == "1")
 100     return true;
 101
 102   return false;
 103 }