[heap] Remove out of date IncrementalMarkingUsingIdleTasksAfterGC test.

test/cctest/heap/test-incremental-marking.cc

 // Copyright 2015 the V8 project 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 <stdlib.h>
 
 #ifdef __linux__
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/stat.h>
@@ skipping 39 matching lines @@
 
   double MonotonicallyIncreasingTime() override {
     return platform_->MonotonicallyIncreasingTime();
   }
 
   void CallIdleOnForegroundThread(v8::Isolate* isolate,
                                   IdleTask* task) override {
     platform_->CallIdleOnForegroundThread(isolate, task);
   }
 
-  bool IdleTasksEnabled(v8::Isolate* isolate) override { return true; }
+  bool IdleTasksEnabled(v8::Isolate* isolate) override { return false; }
 
   bool PendingTask() { return task_ != nullptr; }
 
   void PerformTask() {
     Task* task = task_;
     task_ = nullptr;
     task->Run();
     delete task;
   }
 
@@ skipping 36 matching lines @@
   marking->Stop();
   marking->Start(i::GarbageCollectionReason::kTesting);
   CHECK(platform.PendingTask());
   while (platform.PendingTask()) {
     platform.PerformTask();
   }
   CHECK(marking->IsStopped());
   i::V8::SetPlatformForTesting(old_platform);
 }
 
-
-TEST(IncrementalMarkingUsingIdleTasksAfterGC) {
-  if (!i::FLAG_incremental_marking) return;
-
-  CcTest::InitializeVM();
-  v8::Platform* old_platform = i::V8::GetCurrentPlatform();
-  MockPlatform platform(old_platform);
-  i::V8::SetPlatformForTesting(&platform);
-  i::heap::SimulateFullSpace(CcTest::heap()->old_space());
-  CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask);
-  // Perform any pending idle tasks.
-  while (platform.PendingTask()) {
-    platform.PerformTask();
-  }
-  CHECK(!platform.PendingTask());
-  i::IncrementalMarking* marking = CcTest::heap()->incremental_marking();
-  marking->Stop();
-  marking->Start(i::GarbageCollectionReason::kTesting);
-  CHECK(platform.PendingTask());
-  while (platform.PendingTask()) {
-    platform.PerformTask();
-  }
-  CHECK(marking->IsStopped());
-  i::V8::SetPlatformForTesting(old_platform);
-}
-
 }  // namespace internal
 }  // namespace v8