Fix flaky SW registration in PushMessaging/BudgetManager browser tests

chrome/browser/push_messaging/push_messaging_browsertest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
 #include <string>
 
@@ skipping 487 matching lines @@
   ASSERT_EQ("ok - service worker registered", script_result);
 
   ASSERT_NO_FATAL_FAILURE(RequestAndAcceptPermission());
 
   ASSERT_TRUE(
       RunScript("documentSubscribePushWithEmptyOptions()", &script_result));
   EXPECT_EQ("NotAllowedError - Registration failed - permission denied",
             script_result);
 }
 
-// Flaky on ChromeOS and Linux. See http://crbug.com/657202.
-#if defined(OS_CHROMEOS) || defined(OS_LINUX)
-#define MAYBE_SubscribeWorker DISABLED_SubscribeWorker
-#else
-#define MAYBE_SubscribeWorker SubscribeWorker
-#endif
-IN_PROC_BROWSER_TEST_F(PushMessagingBrowserTest, MAYBE_SubscribeWorker) {
+IN_PROC_BROWSER_TEST_F(PushMessagingBrowserTest, SubscribeWorker) {
   std::string script_result;
 
   ASSERT_TRUE(RunScript("registerServiceWorker()", &script_result));
   ASSERT_EQ("ok - service worker registered", script_result);
 
   ASSERT_NO_FATAL_FAILURE(RequestAndAcceptPermission());
 
   LoadTestPage();  // Reload to become controlled.
 
   ASSERT_TRUE(RunScript("isControlled()", &script_result));
@@ skipping 22 matching lines @@
   std::string token2;
   ASSERT_NO_FATAL_FAILURE(
       EndpointToToken(script_result, true /* standard_protocol */, &token2));
   EXPECT_NE(token1, token2);
 
   ASSERT_TRUE(RunScript("unsubscribePush()", &script_result));
   EXPECT_EQ("unsubscribe result: true", script_result);
   EXPECT_NE(push_service(), GetAppHandler());
 }
 
-// Flaky on ChromeOS and Linux. See http://crbug.com/657202.
-#if defined(OS_CHROMEOS) || defined(OS_LINUX)
-#define MAYBE_SubscribeWorkerUsingManifest DISABLED_SubscribeWorkerUsingManifest
-#else
-#define MAYBE_SubscribeWorkerUsingManifest SubscribeWorkerUsingManifest
-#endif
 IN_PROC_BROWSER_TEST_F(PushMessagingBrowserTest,
-                       MAYBE_SubscribeWorkerUsingManifest) {
+                       SubscribeWorkerUsingManifest) {
   std::string script_result;
 
   ASSERT_TRUE(RunScript("registerServiceWorker()", &script_result));
   ASSERT_EQ("ok - service worker registered", script_result);
 
   ASSERT_NO_FATAL_FAILURE(RequestAndAcceptPermission());
 
   LoadTestPage();  // Reload to become controlled.
 
   ASSERT_TRUE(RunScript("isControlled()", &script_result));
@@ skipping 25 matching lines @@
   std::string token2;
   ASSERT_NO_FATAL_FAILURE(
       EndpointToToken(script_result, false /* standard_protocol */, &token2));
   EXPECT_NE(token1, token2);
 
   ASSERT_TRUE(RunScript("unsubscribePush()", &script_result));
   EXPECT_EQ("unsubscribe result: true", script_result);
   EXPECT_NE(push_service(), GetAppHandler());
 }
 
-// Disabled on Windows and Linux due to flakiness (http://crbug.com/554003).
-#if defined(OS_WIN) || defined(OS_LINUX)
-#define MAYBE_SubscribePersisted DISABLED_SubscribePersisted
-#else
-#define MAYBE_SubscribePersisted SubscribePersisted
-#endif
-IN_PROC_BROWSER_TEST_F(PushMessagingBrowserTest, MAYBE_SubscribePersisted) {
+IN_PROC_BROWSER_TEST_F(PushMessagingBrowserTest, SubscribePersisted) {
   std::string script_result;
 
   // First, test that Service Worker registration IDs are assigned in order of
   // registering the Service Workers, and the (fake) push subscription ids are
   // assigned in order of push subscription (even when these orders are
   // different).
 
   std::string token1;
   ASSERT_NO_FATAL_FAILURE(SubscribeSuccessfully(true /* use_key */, &token1));
   PushMessagingAppIdentifier sw0_identifier =
@@ skipping 1249 matching lines @@
   ASSERT_NO_FATAL_FAILURE(SubscribeSuccessfully());
   ASSERT_FALSE(background_mode_manager->IsBackgroundModeActive());
 
   // After dropping the last subscription background mode is still inactive.
   std::string script_result;
   ASSERT_TRUE(RunScript("unsubscribePush()", &script_result));
   EXPECT_EQ("unsubscribe result: true", script_result);
   ASSERT_FALSE(background_mode_manager->IsBackgroundModeActive());
 }
 #endif  // BUILDFLAG(ENABLE_BACKGROUND) && !defined(OS_CHROMEOS)