IPC: Delete thread-safe send support

content/child/indexed_db/indexed_db_dispatcher_unittest.cc

 // Copyright 2013 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/child/indexed_db/indexed_db_dispatcher.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 36 matching lines @@
     delete msg;
     return true;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockDispatcher);
 };
 
 class MockSyncMessageFilter : public IPC::SyncMessageFilter {
  public:
-  MockSyncMessageFilter()
-      : SyncMessageFilter(nullptr, false /* is_channel_send_thread_safe */) {}
+  MockSyncMessageFilter() : SyncMessageFilter(nullptr) {}
 
  private:
   ~MockSyncMessageFilter() override {}
 };
 
 }  // namespace
 
 class IndexedDBDispatcherTest : public testing::Test {
  public:
   IndexedDBDispatcherTest()
@@ skipping 244 matching lines @@
       other_cursor_ipc_id, cursor1_transaction_id);
 
   EXPECT_EQ(2, cursor1->reset_count());
   EXPECT_EQ(0, cursor2->reset_count());
 
   cursor1.reset();
   cursor2.reset();
 }
 
 }  // namespace content