Convert //extensions/browser/api from scoped_ptr to std::unique_ptr

extensions/browser/api/api_resource_manager_unittest.cc

Index: extensions/browser/api/api_resource_manager_unittest.cc
diff --git a/extensions/browser/api/api_resource_manager_unittest.cc b/extensions/browser/api/api_resource_manager_unittest.cc
index d398b3075ec9ce60fe5f0b2a9c0ed23f38cd4945..7ab19c578b32cc5649b1eda9e8dc0b37a1636015 100644
--- a/extensions/browser/api/api_resource_manager_unittest.cc
+++ b/extensions/browser/api/api_resource_manager_unittest.cc
@@ -28,7 +28,7 @@ class FakeApiResource : public ApiResource {
 };
 
 TEST_F(ApiResourceManagerUnitTest, TwoAppsCannotShareResources) {
-  scoped_ptr<ApiResourceManager<FakeApiResource>> manager(
+  std::unique_ptr<ApiResourceManager<FakeApiResource>> manager(
       new ApiResourceManager<FakeApiResource>(browser_context()));
   scoped_refptr<extensions::Extension> extension_one =
       test_util::CreateEmptyExtension("one");