Check response code before writing blob to file.

webkit/fileapi/file_system_operation_write_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // NOTE: These tests are run as part of "unit_tests" (in chrome/test/unit)
 // rather than as part of test_shell_tests because they rely on being able
 // to instantiate a MessageLoop of type TYPE_IO.  test_shell_tests uses
 // TYPE_UI, which URLRequest doesn't allow.
 //
 
@@ skipping 251 matching lines @@
 
 TEST_F(FileSystemOperationWriteTest, TestWriteInvalidBlobUrl) {
   scoped_refptr<TestURLRequestContext> url_request_context(
       new TestURLRequestContext());
 
   operation()->Write(url_request_context, URLForPath(virtual_path_),
       GURL("blob:invalid"), 0);
   MessageLoop::current()->Run();
 
   EXPECT_EQ(0, bytes_written());
-  EXPECT_EQ(base::PLATFORM_FILE_OK, status());
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_FAILED, status());
   EXPECT_TRUE(complete());
 }
 
 TEST_F(FileSystemOperationWriteTest, TestWriteInvalidFile) {
   GURL blob_url("blob:writeinvalidfile");
   scoped_refptr<webkit_blob::BlobData> blob_data(new webkit_blob::BlobData());
   blob_data->AppendData("It\'ll not be written.");
 
   scoped_refptr<TestURLRequestContext> url_request_context(
       new TestURLRequestContext());
@@ skipping 57 matching lines @@
   url_request_context->blob_storage_controller()->RemoveBlob(blob_url);
 
   EXPECT_EQ(10, bytes_written());
   EXPECT_EQ(base::PLATFORM_FILE_ERROR_NO_SPACE, status());
   EXPECT_TRUE(complete());
 }
 
 // TODO(ericu,dmikurube): Add tests for Cancel.
 
 }  // namespace fileapi