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 #if defined(OS_ANDROID)
  18 #include "base/android/build_info.h"
  19 #endif  // defined(OS_ANDROID)
  20
  21 namespace {
  22
  23 const char kFieldTrialName[] = "EnhancedBookmarks";
  24
  25 bool GetBookmarksExperimentExtensionID(std::string* extension_id) {
  26   *extension_id = variations::GetVariationParamValue(kFieldTrialName, "id");
  27   if (extension_id->empty())
  28     return false;
  29
  30 #if defined(OS_ANDROID) || defined(OS_IOS)
  31   return true;
  32 #else
  33   const extensions::FeatureProvider* feature_provider =
  34       extensions::FeatureProvider::GetPermissionFeatures();
  35   extensions::Feature* feature = feature_provider->GetFeature("metricsPrivate");
  36   return feature && feature->IsIdInWhitelist(*extension_id);
  37 #endif  // defined(OS_ANDROID) || defined(OS_IOS)
  38 }
  39
  40 }  // namespace
  41
  42 #if defined(OS_ANDROID)
  43 bool IsEnhancedBookmarkImageFetchingEnabled(const PrefService* user_prefs) {
  44   if (IsEnhancedBookmarksEnabled())
  45     return true;
  46
  47   // Salient images are collected from visited bookmarked pages even if the
  48   // enhanced bookmark feature is turned off. This is to have some images
  49   // available so that in the future, when the feature is turned on, the user
  50   // experience is not a big list of flat colors. However as a precautionary
  51   // measure it is possible to disable this collection of images from finch.
  52   std::string disable_fetching = variations::GetVariationParamValue(
  53       kFieldTrialName, "DisableImagesFetching");
  54   return disable_fetching.empty();
  55 }
  56 #endif  // defined(OS_ANDROID)
  57
  58 bool IsEnhancedBookmarksEnabled() {
  59   std::string extension_id;
  60   return IsEnhancedBookmarksEnabled(&extension_id);
  61 }
  62
  63 bool IsEnhancedBookmarksEnabled(std::string* extension_id) {
  64   // kEnhancedBookmarksExperiment flag could have values "", "1" and "0".
  65   // "0" - user opted out. "1" is only possible on mobile as desktop needs a
  66   // extension id that would not be available by just using the flag.
  67
  68 #if defined(OS_ANDROID) || defined(OS_IOS)
  69   // Tests use command line flag to force enhanced bookmark to be on.
  70   bool opt_in = base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
  71                     switches::kEnhancedBookmarksExperiment) == "1";
  72   if (opt_in)
  73     return true;
  74 #endif  // defined(OS_ANDROID) || defined(OS_IOS)
  75
  76   bool opt_out = base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
  77                      switches::kEnhancedBookmarksExperiment) == "0";
  78 #if defined(OS_ANDROID)
  79   opt_out |= base::android::BuildInfo::GetInstance()->sdk_int() <
  80                  base::android::SdkVersion::SDK_VERSION_ICE_CREAM_SANDWICH_MR1;
  81 #endif  // defined(OS_ANDROID)
  82
  83   if (opt_out)
  84     return false;
  85
  86   return GetBookmarksExperimentExtensionID(extension_id);
  87 }
  88
  89 bool IsEnableDomDistillerSet() {
  90   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
  91           switches::kEnableDomDistiller)) {
  92     return true;
  93   }
  94   if (variations::GetVariationParamValue(
  95           kFieldTrialName, "enable-dom-distiller") == "1")
  96     return true;
  97
  98   return false;
  99 }
 100
 101 bool IsEnableSyncArticlesSet() {
 102   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 103           switches::kEnableSyncArticles)) {
 104     return true;
 105   }
 106   if (variations::GetVariationParamValue(
 107           kFieldTrialName, "enable-sync-articles") == "1")
 108     return true;
 109
 110   return false;
 111 }