PaymentApp: Add PaymentAppProvider class.

content/browser/payments/payment_app_content_unittest_base.cc

Index: content/browser/payments/payment_app_content_unittest_base.cc
diff --git a/content/browser/payments/payment_app_content_unittest_base.cc b/content/browser/payments/payment_app_content_unittest_base.cc
index 939ac9b483b389809d23b8c9b87c16a68b2ab25d..0281afd779b255d4c9c52d2d7616d424c453d83b 100644
--- a/content/browser/payments/payment_app_content_unittest_base.cc
+++ b/content/browser/payments/payment_app_content_unittest_base.cc
@@ -45,21 +45,20 @@ PaymentAppContentUnitTestBase::PaymentAppContentUnitTestBase()
     : thread_bundle_(
           new TestBrowserThreadBundle(TestBrowserThreadBundle::IO_MAINLOOP)),
       embedded_worker_helper_(new EmbeddedWorkerTestHelper(base::FilePath())),
-      storage_partition_impl_(
-          new StoragePartitionImpl(
-              embedded_worker_helper_->browser_context(), base::FilePath(),
-              nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-              nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr)),
-      payment_app_context_(new PaymentAppContextImpl()) {
+      storage_partition_impl_(static_cast<StoragePartitionImpl*>(
+          BrowserContext::GetDefaultStoragePartition(browser_context()))),
+      payment_app_context_(storage_partition_impl_->GetPaymentAppContext()) {
   embedded_worker_helper_->context_wrapper()->set_storage_partition(
-      storage_partition_impl_.get());
+      storage_partition_impl_);
   payment_app_context_->Init(embedded_worker_helper_->context_wrapper());
   base::RunLoop().RunUntilIdle();
 }
 
-PaymentAppContentUnitTestBase::~PaymentAppContentUnitTestBase() {
-  payment_app_context_->Shutdown();
-  base::RunLoop().RunUntilIdle();
+PaymentAppContentUnitTestBase::~PaymentAppContentUnitTestBase() {}
+
+BrowserContext* PaymentAppContentUnitTestBase::browser_context() {
+  DCHECK(embedded_worker_helper_);
+  return embedded_worker_helper_->browser_context();
 }
 
 PaymentAppManager* PaymentAppContentUnitTestBase::CreatePaymentAppManager(