Remove dated NavigationScheduler TODO.

third_party/WebKit/Source/platform/scheduler/CancellableTaskFactoryTest.cpp

Index: third_party/WebKit/Source/platform/scheduler/CancellableTaskFactoryTest.cpp
diff --git a/third_party/WebKit/Source/platform/scheduler/CancellableTaskFactoryTest.cpp b/third_party/WebKit/Source/platform/scheduler/CancellableTaskFactoryTest.cpp
index 905ae12655c3851f25df9111ed9d9cc62726209d..453e50a77e865674e3662c86b678a4b9aae15f08 100644
--- a/third_party/WebKit/Source/platform/scheduler/CancellableTaskFactoryTest.cpp
+++ b/third_party/WebKit/Source/platform/scheduler/CancellableTaskFactoryTest.cpp
@@ -4,6 +4,7 @@
 
 #include "platform/scheduler/CancellableTaskFactory.h"
 
+#include "platform/heap/Handle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
@@ -176,4 +177,51 @@ TEST_F(CancellableTaskFactoryTest, CreatingANewTaskCancelsPreviousOnes)
     EXPECT_EQ(1, executionCount);
 }
 
+namespace {
+
+class GCObject final : public GarbageCollectedFinalized<GCObject> {
+public:
+    GCObject()
+        : m_factory(CancellableTaskFactory::create(this, &GCObject::run))
+    {
+    }
+
+    ~GCObject()
+    {
+        s_destructed++;
+    }
+
+    void run()
+    {
+        s_invoked++;
+    }
+
+    DEFINE_INLINE_TRACE() { }
+
+    static int s_destructed;
+    static int s_invoked;
+
+    OwnPtr<CancellableTaskFactory> m_factory;
+};
+
+int GCObject::s_destructed = 0;
+int GCObject::s_invoked = 0;
+
+} // namespace
+
+TEST(CancellableTaskFactoryTest, GarbageCollectedWeak)
+{
+    GCObject* object = new GCObject();
+    OwnPtr<WebTaskRunner::Task> task = adoptPtr(object->m_factory->cancelAndCreate());
+    object = nullptr;
+    ThreadHeap::collectAllGarbage();
+    task->run();
+    // The owning object will have been GCed and the task will have
+    // lost its weak reference. Verify that it wasn't invoked.
+    EXPECT_EQ(0, GCObject::s_invoked);
+
+    // ..and just to make sure |object| was indeed destructed.
+    EXPECT_EQ(1, GCObject::s_destructed);
+}
+
 } // namespace blink