diff --git a/chrome/browser/navigation_predictor/navigation_predictor_preconnect_client_browsertest.cc b/chrome/browser/navigation_predictor/navigation_predictor_preconnect_client_browsertest.cc
index 34e519a7..cf33e75 100644
--- a/chrome/browser/navigation_predictor/navigation_predictor_preconnect_client_browsertest.cc
+++ b/chrome/browser/navigation_predictor/navigation_predictor_preconnect_client_browsertest.cc
@@ -367,8 +367,7 @@
  public:
   NavigationPredictorPreconnectClientBrowserTestWithSearch()
       : NavigationPredictorPreconnectClientBrowserTest() {
-    feature_list_.InitWithFeatures(
-        {kPreconnectToSearchTest, features::kPreconnectToSearchNonGoogle}, {});
+    feature_list_.InitWithFeatures({kPreconnectToSearchTest}, {});
   }
 
  private:
@@ -395,6 +394,7 @@
   data.SetShortName(kShortName);
   data.SetKeyword(data.short_name());
   data.SetURL(GetTestURL(kSearchURL).spec());
+  data.preconnect_to_search_url = true;
 
   TemplateURL* template_url = model->Add(std::make_unique<TemplateURL>(data));
   ASSERT_TRUE(template_url);
diff --git a/chrome/browser/navigation_predictor/search_engine_preconnector.cc b/chrome/browser/navigation_predictor/search_engine_preconnector.cc
index 198fa666e..c6539213 100644
--- a/chrome/browser/navigation_predictor/search_engine_preconnector.cc
+++ b/chrome/browser/navigation_predictor/search_engine_preconnector.cc
@@ -17,7 +17,6 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/common/pref_names.h"
-#include "components/google/core/common/google_util.h"
 #include "components/prefs/pref_service.h"
 #include "components/search_engines/template_url_service.h"
 #include "content/public/browser/browser_context.h"
@@ -27,7 +26,7 @@
 // Feature to control preconnect to search.
 const base::Feature kPreconnectToSearch {
   "PreconnectToSearch",
-
+// Experiments are still ongoing on Desktop, but Android is launched for now.
 #if defined(OS_ANDROID)
       base::FEATURE_ENABLED_BY_DEFAULT
 #else
@@ -35,9 +34,6 @@
 #endif
 };
 
-// Feature to limit experimentation to Google search only.
-const base::Feature kPreconnectToSearchNonGoogle{
-    "PreconnectToSearchNonGoogle", base::FEATURE_DISABLED_BY_DEFAULT};
 }  // namespace features
 
 SearchEnginePreconnector::SearchEnginePreconnector(
@@ -85,13 +81,6 @@
       preconnect_url.scheme() != url::kHttpsScheme) {
     return;
   }
-  // Limit experimentation to [www].google.com only.
-  if (!base::FeatureList::IsEnabled(features::kPreconnectToSearchNonGoogle) &&
-      !google_util::IsGoogleDomainUrl(preconnect_url,
-                                      google_util::DISALLOW_SUBDOMAIN,
-                                      google_util::ALLOW_NON_STANDARD_PORTS)) {
-    return;
-  }
 
   auto* loading_predictor = predictors::LoadingPredictorFactory::GetForProfile(
       Profile::FromBrowserContext(browser_context_));
@@ -141,7 +130,7 @@
   if (!template_service)
     return GURL();
   const auto* search_provider = template_service->GetDefaultSearchProvider();
-  if (!search_provider)
+  if (!search_provider || !search_provider->data().preconnect_to_search_url)
     return GURL();
   return search_provider->GenerateSearchURL({}).GetOrigin();
 }
diff --git a/chrome/browser/navigation_predictor/search_engine_preconnector_browsertest.cc b/chrome/browser/navigation_predictor/search_engine_preconnector_browsertest.cc
index 1738421..98a6417 100644
--- a/chrome/browser/navigation_predictor/search_engine_preconnector_browsertest.cc
+++ b/chrome/browser/navigation_predictor/search_engine_preconnector_browsertest.cc
@@ -112,8 +112,6 @@
  private:
   std::unique_ptr<net::EmbeddedTestServer> https_server_;
   std::map<GURL, std::unique_ptr<base::RunLoop>> run_loops_;
-
-  DISALLOW_COPY_AND_ASSIGN(SearchEnginePreconnectorBrowserTest);
 };
 
 // static
@@ -126,16 +124,12 @@
   SearchEnginePreconnectorNoDelaysBrowserTest() {
     feature_list_.InitWithFeaturesAndParameters(
         {{features::kPreconnectToSearch, {{"startup_delay_ms", "1000000"}}},
-         {features::kPreconnectToSearchNonGoogle, {{}}},
          {net::features::kNetUnusedIdleSocketTimeout,
           {{"unused_idle_socket_timeout_seconds", "0"}}}},
         {});
   }
 
   ~SearchEnginePreconnectorNoDelaysBrowserTest() override = default;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SearchEnginePreconnectorNoDelaysBrowserTest);
 };
 
 // Test routinely flakes on the Mac10.11 Tests bot (https://crbug.com/1141028).
@@ -165,6 +159,7 @@
   data.SetShortName(kShortName);
   data.SetKeyword(data.short_name());
   data.SetURL(GetTestURL(kSearchURL).spec());
+  data.preconnect_to_search_url = true;
 
   TemplateURL* template_url = model->Add(std::make_unique<TemplateURL>(data));
   ASSERT_TRUE(template_url);
@@ -201,6 +196,7 @@
   data.SetShortName(kShortName);
   data.SetKeyword(data.short_name());
   data.SetURL(GetTestURL(kSearchURL).spec());
+  data.preconnect_to_search_url = true;
 
   // Set the DSE to the test URL.
   TemplateURL* template_url = model->Add(std::make_unique<TemplateURL>(data));
@@ -214,6 +210,7 @@
   data_fake_search.SetShortName(kShortName);
   data_fake_search.SetKeyword(data.short_name());
   data_fake_search.SetURL(kFakeSearch);
+  data_fake_search.preconnect_to_search_url = true;
 
   template_url = model->Add(std::make_unique<TemplateURL>(data_fake_search));
   ASSERT_TRUE(template_url);
@@ -246,7 +243,6 @@
                 {features::kPreconnectToSearch,
                  {{"startup_delay_ms", "1000000"},
                   {"skip_in_background", "true"}}},
-                {features::kPreconnectToSearchNonGoogle, {{}}},
             },
             {});
       } else {
@@ -255,7 +251,6 @@
                 {features::kPreconnectToSearch,
                  {{"startup_delay_ms", "1000000"},
                   {"skip_in_background", "false"}}},
-                {features::kPreconnectToSearchNonGoogle, {{}}},
             },
             {});
       }
@@ -269,9 +264,6 @@
   ~SearchEnginePreconnectorForegroundBrowserTest() override = default;
 
   base::SimpleTestTickClock tick_clock_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SearchEnginePreconnectorForegroundBrowserTest);
 };
 
 INSTANTIATE_TEST_SUITE_P(All,
@@ -300,6 +292,7 @@
   data.SetShortName(kShortName);
   data.SetKeyword(data.short_name());
   data.SetURL(GetTestURL(kSearchURL).spec());
+  data.preconnect_to_search_url = true;
 
   // Set the DSE to the test URL.
   TemplateURL* template_url = model->Add(std::make_unique<TemplateURL>(data));
@@ -314,6 +307,7 @@
   data_fake_search.SetKeyword(data.short_name());
   const GURL fake_search_url(kFakeSearch);
   data_fake_search.SetURL(kFakeSearch);
+  data_fake_search.preconnect_to_search_url = true;
 
   template_url = model->Add(std::make_unique<TemplateURL>(data_fake_search));
   ASSERT_TRUE(template_url);
@@ -359,16 +353,12 @@
   SearchEnginePreconnectorKeepSocketBrowserTest() {
     feature_list_.InitWithFeaturesAndParameters(
         {{features::kPreconnectToSearch, {{"startup_delay_ms", "1000000"}}},
-         {features::kPreconnectToSearchNonGoogle, {{}}},
          {net::features::kNetUnusedIdleSocketTimeout,
           {{"unused_idle_socket_timeout_seconds", "60"}}}},
         {});
   }
 
   ~SearchEnginePreconnectorKeepSocketBrowserTest() override = default;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SearchEnginePreconnectorKeepSocketBrowserTest);
 };
 
 IN_PROC_BROWSER_TEST_F(SearchEnginePreconnectorKeepSocketBrowserTest,
@@ -388,6 +378,7 @@
   data.SetShortName(kShortName);
   data.SetKeyword(data.short_name());
   data.SetURL(GetTestURL(kSearchURL).spec());
+  data.preconnect_to_search_url = true;
 
   // Set the DSE to the test URL.
   TemplateURL* template_url = model->Add(std::make_unique<TemplateURL>(data));
@@ -431,9 +422,6 @@
   }
 
   ~SearchEnginePreconnectorDesktopAutoStartBrowserTest() override = default;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SearchEnginePreconnectorDesktopAutoStartBrowserTest);
 };
 
 IN_PROC_BROWSER_TEST_F(SearchEnginePreconnectorDesktopAutoStartBrowserTest,
@@ -442,29 +430,24 @@
   WaitForPreresolveCountForURL(GURL(kGoogleSearch), 2);
 }
 
-class SearchEnginePreconnectorGoogleOnlyBrowserTest
+class SearchEnginePreconnectorEnabledOnlyBrowserTest
     : public SearchEnginePreconnectorBrowserTest {
  public:
-  SearchEnginePreconnectorGoogleOnlyBrowserTest() {
+  SearchEnginePreconnectorEnabledOnlyBrowserTest() {
     {
       feature_list_.InitWithFeaturesAndParameters(
           {{features::kPreconnectToSearch, {{"startup_delay_ms", "1000000"}}},
            {net::features::kNetUnusedIdleSocketTimeout,
             {{"unused_idle_socket_timeout_seconds", "60"}}}},
-          {
-              features::kPreconnectToSearchNonGoogle,
-          });
+          {});
     }
   }
 
-  ~SearchEnginePreconnectorGoogleOnlyBrowserTest() override = default;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(SearchEnginePreconnectorGoogleOnlyBrowserTest);
+  ~SearchEnginePreconnectorEnabledOnlyBrowserTest() override = default;
 };
 
-IN_PROC_BROWSER_TEST_F(SearchEnginePreconnectorGoogleOnlyBrowserTest,
-                       GoogleOnly) {
+IN_PROC_BROWSER_TEST_F(SearchEnginePreconnectorEnabledOnlyBrowserTest,
+                       AllowedSearch) {
   constexpr char16_t kShortName[] = u"test";
   constexpr char kSearchURL[] = "/anchors_different_area.html?q={searchTerms}";
   TemplateURLService* model =
@@ -477,6 +460,7 @@
   data.SetShortName(kShortName);
   data.SetKeyword(data.short_name());
   data.SetURL(GetTestURL(kSearchURL).spec());
+  data.preconnect_to_search_url = false;
 
   // Set the DSE to the test URL.
   TemplateURL* template_url = model->Add(std::make_unique<TemplateURL>(data));
@@ -488,12 +472,13 @@
       ->search_engine_preconnector()
       ->StartPreconnecting(/*with_startup_delay=*/false);
 
-  TemplateURLData data_google_search;
-  data_google_search.SetShortName(kShortName);
-  data_google_search.SetKeyword(data.short_name());
-  data_google_search.SetURL(kGoogleSearch);
+  TemplateURLData data_allowed_search;
+  data_allowed_search.SetShortName(kShortName);
+  data_allowed_search.SetKeyword(data.short_name());
+  data_allowed_search.SetURL(kGoogleSearch);
+  data_allowed_search.preconnect_to_search_url = true;
 
-  template_url = model->Add(std::make_unique<TemplateURL>(data_google_search));
+  template_url = model->Add(std::make_unique<TemplateURL>(data_allowed_search));
   ASSERT_TRUE(template_url);
   model->SetUserSelectedDefaultSearchProvider(template_url);
 
diff --git a/components/search_engines/default_search_manager.cc b/components/search_engines/default_search_manager.cc
index ce9d885..88a5694 100644
--- a/components/search_engines/default_search_manager.cc
+++ b/components/search_engines/default_search_manager.cc
@@ -77,6 +77,8 @@
 const char DefaultSearchManager::kDisabledByPolicy[] = "disabled_by_policy";
 const char DefaultSearchManager::kCreatedFromPlayAPI[] =
     "created_from_play_api";
+const char DefaultSearchManager::kPreconnectToSearchUrl[] =
+    "preconnect_to_search_url";
 
 DefaultSearchManager::DefaultSearchManager(
     PrefService* pref_service,
diff --git a/components/search_engines/default_search_manager.h b/components/search_engines/default_search_manager.h
index 8c3f400..9c56805 100644
--- a/components/search_engines/default_search_manager.h
+++ b/components/search_engines/default_search_manager.h
@@ -61,6 +61,7 @@
   static const char kCreatedByPolicy[];
   static const char kDisabledByPolicy[];
   static const char kCreatedFromPlayAPI[];
+  static const char kPreconnectToSearchUrl[];
 
   enum Source {
     // Default search engine chosen either from prepopulated engines set for
diff --git a/components/search_engines/prepopulated_engines.json b/components/search_engines/prepopulated_engines.json
index 269a489..3197f2707 100644
--- a/components/search_engines/prepopulated_engines.json
+++ b/components/search_engines/prepopulated_engines.json
@@ -28,7 +28,7 @@
     // Increment this if you change the data in ways that mean users with
     // existing data should get a new version. Otherwise, existing data may
     // continue to be used and updates made here will not always appear.
-    "kCurrentDataVersion": 125
+    "kCurrentDataVersion": 126
   },
 
   // The following engines are included in country lists and are added to the
@@ -129,6 +129,7 @@
         "{google:baseURL}s?q={searchTerms}"
       ],
       "type": "SEARCH_ENGINE_GOOGLE",
+      "preconnect_to_search_url" : "ALLOWED",
       "id": 1
     },
 
diff --git a/components/search_engines/prepopulated_engines_schema.json b/components/search_engines/prepopulated_engines_schema.json
index c46435e..9d6a797f 100644
--- a/components/search_engines/prepopulated_engines_schema.json
+++ b/components/search_engines/prepopulated_engines_schema.json
@@ -65,6 +65,10 @@
       "default": "SEARCH_ENGINE_OTHER",
       "optional": true
     },
+    // Whether a connection to search_url should regularly be established when
+    // the engine is set as the "default search engine". "ALLOWED" is the only
+    // value that will enable the pre-connections.
+    { "field": "preconnect_to_search_url", "type": "string", "optional": true },
     // Unique id for this prepopulate engine (corresponds to
     // TemplateURL::prepopulate_id). This ID must be greater than zero and must
     // remain the same for a particular site regardless of how the url changes;
diff --git a/components/search_engines/template_url_data.cc b/components/search_engines/template_url_data.cc
index 9e38747..3198d61 100644
--- a/components/search_engines/template_url_data.cc
+++ b/components/search_engines/template_url_data.cc
@@ -68,6 +68,7 @@
                                  base::StringPiece favicon_url,
                                  base::StringPiece encoding,
                                  const base::ListValue& alternate_urls_list,
+                                 bool preconnect_to_search_url,
                                  int prepopulate_id)
     : suggestions_url(suggest_url),
       image_url(image_url),
@@ -87,7 +88,8 @@
       created_from_play_api(false),
       usage_count(0),
       prepopulate_id(prepopulate_id),
-      sync_guid(GenerateGUID(prepopulate_id)) {
+      sync_guid(GenerateGUID(prepopulate_id)),
+      preconnect_to_search_url(preconnect_to_search_url) {
   SetShortName(name);
   SetKeyword(keyword);
   SetURL(std::string(search_url));
diff --git a/components/search_engines/template_url_data.h b/components/search_engines/template_url_data.h
index 352aec2..d9b842c 100644
--- a/components/search_engines/template_url_data.h
+++ b/components/search_engines/template_url_data.h
@@ -45,6 +45,7 @@
                   base::StringPiece favicon_url,
                   base::StringPiece encoding,
                   const base::ListValue& alternate_urls_list,
+                  bool preconnect_to_search_url,
                   int prepopulate_id);
 
   ~TemplateURLData();
@@ -153,6 +154,10 @@
   // search terms from a URL.
   std::vector<std::string> alternate_urls;
 
+  // Whether a connection to |url_| should regularly be established when this is
+  // set as the "default search engine".
+  bool preconnect_to_search_url = false;
+
  private:
   // Private so we can enforce using the setters and thus enforce that these
   // fields are never empty.
diff --git a/components/search_engines/template_url_data_unittest.cc b/components/search_engines/template_url_data_unittest.cc
index 869a9c0..7ae1958 100644
--- a/components/search_engines/template_url_data_unittest.cc
+++ b/components/search_engines/template_url_data_unittest.cc
@@ -15,7 +15,7 @@
       base::StringPiece(), base::StringPiece(), base::StringPiece(),
       base::StringPiece(), base::StringPiece(), base::StringPiece(),
       base::StringPiece(), base::StringPiece(), base::StringPiece(),
-      base::StringPiece(), base::StringPiece(), base::ListValue(), 0);
+      base::StringPiece(), base::StringPiece(), base::ListValue(), false, 0);
 
   EXPECT_EQ(u"shortname", data.short_name());
   EXPECT_EQ(u"keyword", data.keyword());
diff --git a/components/search_engines/template_url_data_util.cc b/components/search_engines/template_url_data_util.cc
index 8c2255c..840b051 100644
--- a/components/search_engines/template_url_data_util.cc
+++ b/components/search_engines/template_url_data_util.cc
@@ -120,6 +120,8 @@
                   &result->created_by_policy);
   dict.GetBoolean(DefaultSearchManager::kCreatedFromPlayAPI,
                   &result->created_from_play_api);
+  dict.GetBoolean(DefaultSearchManager::kPreconnectToSearchUrl,
+                  &result->preconnect_to_search_url);
   return result;
 }
 
@@ -184,6 +186,8 @@
                        data.created_by_policy);
   url_dict->SetBoolean(DefaultSearchManager::kCreatedFromPlayAPI,
                        data.created_from_play_api);
+  url_dict->SetBoolean(DefaultSearchManager::kPreconnectToSearchUrl,
+                       data.preconnect_to_search_url);
   return url_dict;
 }
 
@@ -205,7 +209,8 @@
       ToStringPiece(engine.suggest_url_post_params),
       ToStringPiece(engine.image_url_post_params),
       ToStringPiece(engine.favicon_url), ToStringPiece(engine.encoding),
-      alternate_urls, engine.id);
+      alternate_urls,
+      ToStringPiece(engine.preconnect_to_search_url) == "ALLOWED", engine.id);
 }
 
 std::unique_ptr<TemplateURLData> TemplateURLDataFromOverrideDictionary(
@@ -233,6 +238,7 @@
     std::string search_url_post_params;
     std::string suggest_url_post_params;
     std::string image_url_post_params;
+    std::string preconnect_to_search_url;
     base::ListValue empty_list;
     const base::ListValue* alternate_urls = &empty_list;
     engine.GetString("suggest_url", &suggest_url);
@@ -245,11 +251,12 @@
     engine.GetString("suggest_url_post_params", &suggest_url_post_params);
     engine.GetString("image_url_post_params", &image_url_post_params);
     engine.GetList("alternate_urls", &alternate_urls);
+    engine.GetString("preconnect_to_search_url", &preconnect_to_search_url);
     return std::make_unique<TemplateURLData>(
         name, keyword, search_url, suggest_url, image_url, new_tab_url,
         contextual_search_url, logo_url, doodle_url, search_url_post_params,
         suggest_url_post_params, image_url_post_params, favicon_url, encoding,
-        *alternate_urls, id);
+        *alternate_urls, preconnect_to_search_url.compare("ALLOWED") == 0, id);
   }
   return nullptr;
 }
diff --git a/components/search_engines/template_url_service_util_unittest.cc b/components/search_engines/template_url_service_util_unittest.cc
index d18f7680..e8e822ef 100644
--- a/components/search_engines/template_url_service_util_unittest.cc
+++ b/components/search_engines/template_url_service_util_unittest.cc
@@ -26,7 +26,8 @@
       "" /* contextual_search_url */, "" /* logo_url */, "" /* doodle_url */,
       "" /* search_url_post_params */, "" /* suggest_url_post_params */,
       "" /* image_url_post_params */, "" /* favicon_url */, "UTF-8",
-      base::ListValue() /* alternate_urls_list */, prepopulate_id);
+      base::ListValue() /* alternate_urls_list */,
+      false /* preconnect_to_search_url */, prepopulate_id);
 }
 
 // Creates a TemplateURL with default values except for the prepopulate ID,