Change single-interface mojo bindings to use SequencedTaskRunner.

mojo/public/cpp/bindings/lib/binding_state.h

 // Copyright 2015 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 MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDING_STATE_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDING_STATE_H_
 
 #include <memory>
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
-#include "base/single_thread_task_runner.h"
+#include "base/sequenced_task_runner.h"
 #include "mojo/public/cpp/bindings/associated_group.h"
 #include "mojo/public/cpp/bindings/bindings_export.h"
 #include "mojo/public/cpp/bindings/connection_error_callback.h"
 #include "mojo/public/cpp/bindings/filter_chain.h"
 #include "mojo/public/cpp/bindings/interface_endpoint_client.h"
 #include "mojo/public/cpp/bindings/interface_id.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 #include "mojo/public/cpp/bindings/interface_ptr_info.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/bindings/lib/multiplex_router.h"
@@ skipping 43 matching lines @@
   AssociatedGroup* associated_group() {
     return endpoint_client_ ? endpoint_client_->associated_group() : nullptr;
   }
 
   void FlushForTesting();
 
   void EnableTestingMode();
 
  protected:
   void BindInternal(ScopedMessagePipeHandle handle,
-                    scoped_refptr<base::SingleThreadTaskRunner> runner,
+                    scoped_refptr<base::SequencedTaskRunner> runner,
                     const char* interface_name,
                     std::unique_ptr<MessageReceiver> request_validator,
                     bool passes_associated_kinds,
                     bool has_sync_methods,
                     MessageReceiverWithResponderStatus* stub,
                     uint32_t interface_version);
 
   scoped_refptr<internal::MultiplexRouter> router_;
   std::unique_ptr<InterfaceEndpointClient> endpoint_client_;
 };
 
 template <typename Interface, typename ImplRefTraits>
 class BindingState : public BindingStateBase {
  public:
   using ImplPointerType = typename ImplRefTraits::PointerType;
 
   explicit BindingState(ImplPointerType impl) {
     stub_.set_sink(std::move(impl));
   }
 
   ~BindingState() { Close(); }
 
   void Bind(ScopedMessagePipeHandle handle,
-            scoped_refptr<base::SingleThreadTaskRunner> runner) {
+            scoped_refptr<base::SequencedTaskRunner> runner) {
     BindingStateBase::BindInternal(
         std::move(handle), runner, Interface::Name_,
         base::MakeUnique<typename Interface::RequestValidator_>(),
         Interface::PassesAssociatedKinds_, Interface::HasSyncMethods_, &stub_,
         Interface::Version_);
     if (Interface::PassesAssociatedKinds_)
       stub_.serialization_context()->group_controller = router_;
   }
 
   InterfaceRequest<Interface> Unbind() {
     endpoint_client_.reset();
     InterfaceRequest<Interface> request =
         MakeRequest<Interface>(router_->PassMessagePipe());
     router_ = nullptr;
     return request;
   }
 
   Interface* impl() { return ImplRefTraits::GetRawPointer(&stub_.sink()); }
 
  private:
   typename Interface::template Stub_<ImplRefTraits> stub_;
 
   DISALLOW_COPY_AND_ASSIGN(BindingState);
 };
 
 }  // namesapce internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDING_STATE_H_