Remove deprecated ExecutionContextTask

third_party/WebKit/Source/core/testing/NullExecutionContext.h

 // 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.
 
 #ifndef NullExecutionContext_h
 #define NullExecutionContext_h
 
 #include "bindings/core/v8/SourceLocation.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/SecurityContext.h"
@@ skipping 12 matching lines @@
   USING_GARBAGE_COLLECTED_MIXIN(NullExecutionContext);
 
  public:
   NullExecutionContext();
 
   void SetURL(const KURL& url) { url_ = url; }
 
   void DisableEval(const String&) override {}
   String UserAgent() const override { return String(); }
 
-  void PostTask(
-      TaskType,
-      const WebTraceLocation&,
-      std::unique_ptr<ExecutionContextTask>,
-      const String& task_name_for_instrumentation = g_empty_string) override;
-
   EventTarget* ErrorEventTarget() override { return nullptr; }
   EventQueue* GetEventQueue() const override { return queue_.Get(); }
 
   bool TasksNeedSuspension() override { return tasks_need_suspension_; }
   void SetTasksNeedSuspension(bool flag) { tasks_need_suspension_ = flag; }
 
   void DidUpdateSecurityOrigin() override {}
   SecurityContext& GetSecurityContext() override { return *this; }
   DOMTimerCoordinator* Timers() override { return nullptr; }
 
@@ skipping 22 matching lines @@
   bool tasks_need_suspension_;
   bool is_secure_context_;
   Member<EventQueue> queue_;
 
   KURL url_;
 };
 
 }  // namespace blink
 
 #endif  // NullExecutionContext_h