Cleanup: Introduce AsyncFileTestHelper for testing with async file/quota operations

webkit/fileapi/local_file_system_operation_unittest.cc

Index: webkit/fileapi/local_file_system_operation_unittest.cc
diff --git a/webkit/fileapi/local_file_system_operation_unittest.cc b/webkit/fileapi/local_file_system_operation_unittest.cc
index 8bc9972d1832eff50c2a82ed362ab0bbb669ef70..f5d0e21f56ef1015a2a87c6273d905c65e26e61a 100644
--- a/webkit/fileapi/local_file_system_operation_unittest.cc
+++ b/webkit/fileapi/local_file_system_operation_unittest.cc
@@ -14,12 +14,12 @@
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/blob/shareable_file_reference.h"
+#include "webkit/fileapi/async_file_test_helper.h"
 #include "webkit/fileapi/file_system_context.h"
 #include "webkit/fileapi/file_system_file_util.h"
 #include "webkit/fileapi/file_system_mount_point_provider.h"
 #include "webkit/fileapi/file_system_quota_util.h"
 #include "webkit/fileapi/file_system_util.h"
-#include "webkit/fileapi/file_util_helper.h"
 #include "webkit/fileapi/local_file_system_test_helper.h"
 #include "webkit/fileapi/mock_file_change_observer.h"
 #include "webkit/quota/mock_quota_manager.h"
@@ -111,18 +111,15 @@ class LocalFileSystemOperationTest
 
   bool FileExists(const base::FilePath& virtual_path) {
     FileSystemURL url = test_helper_.CreateURL(virtual_path);
-    base::PlatformFileInfo file_info;
-    base::FilePath platform_path;
-    scoped_ptr<FileSystemOperationContext> context(NewContext());
-    base::PlatformFileError error = file_util()->GetFileInfo(
-        context.get(), url, &file_info, &platform_path);
-    return error == base::PLATFORM_FILE_OK && !file_info.is_directory;
+    return AsyncFileTestHelper::FileExists(
+        test_helper_.file_system_context(), url,
+        AsyncFileTestHelper::kDontCheckSize);
   }
 
   bool DirectoryExists(const base::FilePath& virtual_path) {
     FileSystemURL url = test_helper_.CreateURL(virtual_path);
-    scoped_ptr<FileSystemOperationContext> context(NewContext());
-    return FileUtilHelper::DirectoryExists(context.get(), file_util(), url);
+    return AsyncFileTestHelper::DirectoryExists(
+        test_helper_.file_system_context(), url);
   }
 
   base::FilePath CreateUniqueFileInDir(const base::FilePath& virtual_dir_path) {
@@ -209,29 +206,11 @@ class LocalFileSystemOperationTest
     shareable_file_ref_ = shareable_file_ref;
   }
 
-  static void DidGetUsageAndQuota(quota::QuotaStatusCode* status_out,
-                           int64* usage_out,
-                           int64* quota_out,
-                           quota::QuotaStatusCode status,
-                           int64 usage,
-                           int64 quota) {
-    if (status_out)
-      *status_out = status;
-
-    if (usage_out)
-      *usage_out = usage;
-
-    if (quota_out)
-      *quota_out = quota;
-  }
-
   void GetUsageAndQuota(int64* usage, int64* quota) {
-    quota::QuotaStatusCode status = quota::kQuotaStatusUnknown;
-    quota_manager_->GetUsageAndQuota(
-        test_helper_.origin(),
-        test_helper_.storage_type(),
-        base::Bind(&LocalFileSystemOperationTest::DidGetUsageAndQuota,
-                   &status, usage, quota));
+    quota::QuotaStatusCode status =
+        AsyncFileTestHelper::GetUsageAndQuota(
+            quota_manager_, test_helper_.origin(), test_helper_.type(),
+            usage, quota);
     MessageLoop::current()->RunUntilIdle();
     ASSERT_EQ(quota::kQuotaStatusOk, status);
   }