Change single-interface mojo bindings to use SequencedTaskRunner.

mojo/public/cpp/bindings/interface_request.h

Index: mojo/public/cpp/bindings/interface_request.h
diff --git a/mojo/public/cpp/bindings/interface_request.h b/mojo/public/cpp/bindings/interface_request.h
index db102368b86be2837653e96a9f738e79e237fd90..eb0d64e73f6ea530396f03644f4e96636bf780c5 100644
--- a/mojo/public/cpp/bindings/interface_request.h
+++ b/mojo/public/cpp/bindings/interface_request.h
@@ -10,8 +10,8 @@
 
 #include "base/macros.h"
 #include "base/optional.h"
-#include "base/single_thread_task_runner.h"
-#include "base/threading/thread_task_runner_handle.h"
+#include "base/sequenced_task_runner.h"
+#include "base/threading/sequenced_task_runner_handle.h"
 #include "mojo/public/cpp/bindings/disconnect_reason.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 #include "mojo/public/cpp/bindings/pipe_control_message_proxy.h"
@@ -38,8 +38,8 @@ class InterfaceRequest {
   // InterfaceRequest to the other. For example usage, see comments on
   // MakeRequest(InterfacePtr*) below.
   explicit InterfaceRequest(InterfacePtr<Interface>* ptr,
-                            scoped_refptr<base::SingleThreadTaskRunner> runner =
-                                base::ThreadTaskRunnerHandle::Get()) {
+                            scoped_refptr<base::SequencedTaskRunner> runner =
+                                base::SequencedTaskRunnerHandle::Get()) {
     MessagePipe pipe;
     ptr->Bind(InterfacePtrInfo<Interface>(std::move(pipe.handle0), 0u),
               std::move(runner));
@@ -161,8 +161,8 @@ InterfaceRequest<Interface> MakeRequest(ScopedMessagePipeHandle handle) {
 template <typename Interface>
 InterfaceRequest<Interface> MakeRequest(
     InterfacePtr<Interface>* ptr,
-    scoped_refptr<base::SingleThreadTaskRunner> runner =
-        base::ThreadTaskRunnerHandle::Get()) {
+    scoped_refptr<base::SequencedTaskRunner> runner =
+        base::SequencedTaskRunnerHandle::Get()) {
   return InterfaceRequest<Interface>(ptr, runner);
 }