memory-infra: Switch to MemoryPeakDetector and simplify MemoryDumpScheduler

base/trace_event/memory_dump_manager_unittest.cc

Index: base/trace_event/memory_dump_manager_unittest.cc
diff --git a/base/trace_event/memory_dump_manager_unittest.cc b/base/trace_event/memory_dump_manager_unittest.cc
index faae270ee1881b6ab823834b4e88a8681df4a831..71159efce32a3ed5c94617a40f8470ea38d44710 100644
--- a/base/trace_event/memory_dump_manager_unittest.cc
+++ b/base/trace_event/memory_dump_manager_unittest.cc
@@ -244,10 +244,6 @@ class MemoryDumpManagerTest : public testing::Test {
     task_runner->PostTask(FROM_HERE, closure);
   }
 
-  void PollFastMemoryTotal(uint64_t* memory_total) {
-    mdm_->PollFastMemoryTotal(memory_total);
-  }
-
  protected:
   void InitializeMemoryDumpManager(bool is_coordinator) {
     mdm_->set_dumper_registrations_ignored_for_testing(true);
@@ -278,8 +274,7 @@ class MemoryDumpManagerTest : public testing::Test {
   void DisableTracing() { TraceLog::GetInstance()->SetDisabled(); }
 
   bool IsPeriodicDumpingEnabled() const {
-    return MemoryDumpScheduler::GetInstance()
-        ->IsPeriodicTimerRunningForTesting();
+    return MemoryDumpScheduler::GetInstance()->IsEnabledForTesting();
   }
 
   int GetMaxConsecutiveFailuresCount() const {
@@ -808,7 +803,7 @@ TEST_F(MemoryDumpManagerTest, TestPollingOnDumpThread) {
       .Times(Between(0, kPollsToQuit - 1))
       .WillRepeatedly(Return());
 
-  MemoryDumpScheduler::SetPollingIntervalForTesting(1);
+  // TODO here MemoryDumpScheduler::SetPollingIntervalForTesting(1);
   EnableTracingWithTraceConfig(
       TraceConfigMemoryTestUtil::GetTraceConfig_PeakDetectionTrigger(3));