[NOT FOR COMMIT] Nested types CL 1

third_party/WebKit/Source/modules/background_fetch/BackgroundFetchManager.cpp

Index: third_party/WebKit/Source/modules/background_fetch/BackgroundFetchManager.cpp
diff --git a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchManager.cpp b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchManager.cpp
index a1339f50c9bf2c09e144a890e6488f00270952ba..60a02be1a916b6c0f988ea1e05ae6acfaad16d72 100644
--- a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchManager.cpp
+++ b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchManager.cpp
@@ -7,6 +7,7 @@
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8ThrowException.h"
+#include "bindings/modules/v8/RequestOrUSVStringOrRequestOrUSVStringSequence.h"
 #include "modules/background_fetch/BackgroundFetchOptions.h"
 #include "modules/background_fetch/BackgroundFetchRegistration.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
@@ -22,8 +23,18 @@ BackgroundFetchManager::BackgroundFetchManager(
 ScriptPromise BackgroundFetchManager::fetch(
     ScriptState* scriptState,
     String tag,
-    HeapVector<RequestOrUSVString> requests,
+    const RequestOrUSVStringOrRequestOrUSVStringSequence& requests,
     const BackgroundFetchOptions& options) {
+  if (requests.isRequest()) {
+    LOG(INFO) << "We were passed a Request IDL object.";
+  } else if (requests.isUSVString()) {
+    LOG(INFO) << "We were passed an USVString.";
+  } else if (requests.isRequestOrUSVStringSequence()) {
+    LOG(INFO) << "We were passed a sequence<(Request or USVString)>.";
+  } else /* requests.isNull() */ {
+    NOTREACHED();
+  }
+
   if (!m_registration->active()) {
     return ScriptPromise::reject(
         scriptState,