Privatize StrongBinding lifetime management

content/browser/service_worker/service_worker_version_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/browser/service_worker/service_worker_version.h"
 
 #include <stdint.h>
 #include <tuple>
 
 #include "base/macros.h"
@@ skipping 145 matching lines @@
 };
 
 base::Time GetYesterday() {
   return base::Time::Now() - base::TimeDelta::FromDays(1) -
          base::TimeDelta::FromSeconds(1);
 }
 
 class TestMojoServiceImpl : public mojom::TestMojoService {
  public:
   static void Create(mojo::InterfaceRequest<mojom::TestMojoService> request) {
-    new TestMojoServiceImpl(std::move(request));
+    mojo::MakeStrongBinding(base::WrapUnique(new TestMojoServiceImpl),
+                            std::move(request));
   }
 
   void DoSomething(const DoSomethingCallback& callback) override {
     callback.Run();
   }
 
   void DoTerminateProcess(const DoTerminateProcessCallback& callback) override {
     NOTREACHED();
   }
 
   void CreateFolder(const CreateFolderCallback& callback) override {
     NOTREACHED();
   }
 
   void GetRequestorName(const GetRequestorNameCallback& callback) override {
     callback.Run(mojo::String(""));
   }
 
  private:
-  explicit TestMojoServiceImpl(
-      mojo::InterfaceRequest<mojom::TestMojoService> request)
-      : binding_(this, std::move(request)) {}
-
-  mojo::StrongBinding<mojom::TestMojoService> binding_;
+  explicit TestMojoServiceImpl() {}
 };
 
 }  // namespace
 
 class ServiceWorkerVersionTest : public testing::Test {
  protected:
   struct RunningStateListener : public ServiceWorkerVersion::Listener {
     RunningStateListener() : last_status(EmbeddedWorkerStatus::STOPPED) {}
     ~RunningStateListener() override {}
     void OnRunningStateChanged(ServiceWorkerVersion* version) override {
@@ skipping 1536 matching lines @@
   histogram_tester_.ExpectTotalCount(kLinkMouseDown, 1);
   histogram_tester_.ExpectTotalCount(kLinkTapDown, 0);
   EXPECT_EQ(SERVICE_WORKER_OK, status);
   StopWorker();
   // The UMA for kLinkMouseDown must be recorded when the worker stopped.
   histogram_tester_.ExpectTotalCount(kLinkMouseDown, 1);
   histogram_tester_.ExpectTotalCount(kLinkTapDown, 1);
 }
 
 }  // namespace content