Wire up the deleteFileSystem operation.

webkit/fileapi/test_mount_point_provider.cc

Index: webkit/fileapi/test_mount_point_provider.cc
diff --git a/webkit/fileapi/test_mount_point_provider.cc b/webkit/fileapi/test_mount_point_provider.cc
index c1e76d37f974e12304a9beda1a424e617ef38eec..54f19a636551862858c15e426826b91795bb51a3 100644
--- a/webkit/fileapi/test_mount_point_provider.cc
+++ b/webkit/fileapi/test_mount_point_provider.cc
@@ -160,4 +160,15 @@ FileSystemQuotaUtil* TestMountPointProvider::GetQuotaUtil() {
   return quota_util_.get();
 }
 
+void TestMountPointProvider::DeleteFileSystem(
+    const GURL& origin_url,
+    FileSystemType type,
+    FileSystemContext* context,
+    const DeleteFileSystemCallback& callback) const {
+  // This won't be called unless we add test code that opens a test
+  // filesystem by OpenFileSystem.
+  NOTREACHED();
+  callback.Run(base::PLATFORM_FILE_ERROR_INVALID_OPERATION);
+}
+
 }  // namespace fileapi