IPC: Delete thread-safe send support

content/renderer/gpu/queue_message_swap_promise_unittest.cc

 // 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.
 
 #include "content/renderer/gpu/queue_message_swap_promise.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 17 matching lines @@
   using RenderWidget::QueueMessageImpl;
 
  private:
   ~TestRenderWidget() override {}
 
   DISALLOW_COPY_AND_ASSIGN(TestRenderWidget);
 };
 
 class TestSyncMessageFilter : public IPC::SyncMessageFilter {
  public:
-  TestSyncMessageFilter() : IPC::SyncMessageFilter(NULL, false) {}
+  TestSyncMessageFilter() : IPC::SyncMessageFilter(nullptr) {}
 
   bool Send(IPC::Message* message) override {
     messages_.push_back(base::WrapUnique(message));
     return true;
   }
 
   std::vector<std::unique_ptr<IPC::Message>>& messages() { return messages_; }
 
  private:
   ~TestSyncMessageFilter() override {}
@@ skipping 269 matching lines @@
 TEST_F(QueueMessageSwapPromiseTest, VisualStateSwapPromiseDidNotSwapSwapFails) {
   VisualStateSwapPromiseDidNotSwap(cc::SwapPromise::SWAP_FAILS);
 }
 
 TEST_F(QueueMessageSwapPromiseTest,
        VisualStateSwapPromiseDidNotSwapActivationFails) {
   VisualStateSwapPromiseDidNotSwap(cc::SwapPromise::ACTIVATION_FAILS);
 }
 
 }  // namespace content