[fsp] Add support for copying files within a provided file system.

chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc

Index: chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
diff --git a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
index c002a8b0a07b0d55ab60752d063e382a39f9f1fa..956ac0700ed64ccc39121fb7307bcb8ff3b5e1e6 100644
--- a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
+++ b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_apitest.cc
@@ -92,4 +92,10 @@ IN_PROC_BROWSER_TEST_F(FileSystemProviderApiTest, CreateFile) {
       << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(FileSystemProviderApiTest, CopyEntry) {
+  ASSERT_TRUE(RunPlatformAppTestWithFlags("file_system_provider/copy_entry",
+                                          kFlagLoadAsComponent))
+      << message_;
+}
+
 }  // namespace extensions