[fsp] Add support for creating files.

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 947bc95d51ba9d5cff6a7a47d7d9c4d7c002bbaf..c002a8b0a07b0d55ab60752d063e382a39f9f1fa 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
@@ -86,4 +86,10 @@ IN_PROC_BROWSER_TEST_F(FileSystemProviderApiTest, DeleteEntry) {
       << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(FileSystemProviderApiTest, CreateFile) {
+  ASSERT_TRUE(RunPlatformAppTestWithFlags("file_system_provider/create_file",
+                                          kFlagLoadAsComponent))
+      << message_;
+}
+
 }  // namespace extensions