[Extensions][TaskScheduler] Update ActivityLog for scheduling migration

chrome/browser/extensions/activity_log/counting_policy_unittest.cc

Index: chrome/browser/extensions/activity_log/counting_policy_unittest.cc
diff --git a/chrome/browser/extensions/activity_log/counting_policy_unittest.cc b/chrome/browser/extensions/activity_log/counting_policy_unittest.cc
index d6b413137975e04c83f86a4f90ac6a872c1c33cf..08897ab2d740dfbb65eea0dfbc9a5bf262f04591 100644
--- a/chrome/browser/extensions/activity_log/counting_policy_unittest.cc
+++ b/chrome/browser/extensions/activity_log/counting_policy_unittest.cc
@@ -26,6 +26,7 @@
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/activity_log/activity_log.h"
+#include "chrome/browser/extensions/activity_log/activity_log_task_runner.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/test_extension_system.h"
 #include "chrome/common/chrome_constants.h"
@@ -43,8 +44,6 @@
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
 #endif
 
-using content::BrowserThread;
-
 namespace extensions {
 
 class CountingPolicyTest : public testing::Test {
@@ -72,10 +71,10 @@ class CountingPolicyTest : public testing::Test {
     base::RunLoop().RunUntilIdle();
   }
 
-  // Wait for the task queue for the specified thread to empty.
-  void WaitOnThread(const BrowserThread::ID& thread) {
-    BrowserThread::PostTaskAndReply(
-        thread, FROM_HERE, base::BindOnce(&base::DoNothing),
+  // Waits for the task queue for the activity log sequence to empty.
+  void WaitOnActivityLogSequence() {
+    GetActivityLogTaskRunner()->PostTaskAndReply(
+        FROM_HERE, base::BindOnce(&base::DoNothing),
         base::MessageLoop::current()->QuitWhenIdleClosure());
     base::RunLoop().Run();
   }
@@ -773,7 +772,7 @@ TEST_F(CountingPolicyTest, StringTableCleaning) {
                             &CountingPolicyTest::CheckStringTableSizes,
                             3,
                             1);
-  WaitOnThread(BrowserThread::DB);
+  WaitOnActivityLogSequence();
 
   // Trigger a cleaning.  The oldest action is expired when we submit a
   // duplicate of the newer action.  After this, there should be two strings
@@ -786,7 +785,7 @@ TEST_F(CountingPolicyTest, StringTableCleaning) {
                             &CountingPolicyTest::CheckStringTableSizes,
                             2,
                             0);
-  WaitOnThread(BrowserThread::DB);
+  WaitOnActivityLogSequence();
 
   policy->Close();
 }
@@ -884,7 +883,7 @@ TEST_F(CountingPolicyTest, EarlyFlush) {
   }
 
   policy->ScheduleAndForget(policy, &CountingPolicyTest::CheckQueueSize);
-  WaitOnThread(BrowserThread::DB);
+  WaitOnActivityLogSequence();
 
   policy->Close();
 }
@@ -903,7 +902,7 @@ TEST_F(CountingPolicyTest, CapReturns) {
   }
 
   policy->Flush();
-  WaitOnThread(BrowserThread::DB);
+  WaitOnActivityLogSequence();
 
   CheckReadFilteredData(
       policy,