[BlobAsync] Patch 2: Common Constants

storage/common/blob_storage/blob_item_bytes_response.cc

+// Copyright 2015 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.
+
+#include "storage/common/blob_storage/blob_item_bytes_response.h"
+
+#include <algorithm>
+#include <string>
+
+#include "base/strings/string_number_conversions.h"
+
+namespace storage {
+
+BlobItemBytesResponse::BlobItemBytesResponse()
+    : request_number(kInvalidIndex) {}
+
+BlobItemBytesResponse::BlobItemBytesResponse(size_t request_number)
+    : request_number(request_number) {}
+
+BlobItemBytesResponse::~BlobItemBytesResponse() {}
+
+void PrintTo(const BlobItemBytesResponse& response, ::std::ostream* os) {
+  const size_t kMaxDataPrintLength = 40;
+  size_t length = std::min(response.inline_data.size(), kMaxDataPrintLength);
+  *os << "{request_number: " << response.request_number
+      << ", inline_data size: " << response.inline_data.size()
+      << ", inline_data: [";
+  if (length == 0) {
+    *os << "<empty>";
+  } else {
+    *os << base::HexEncode(&response.inline_data[0], length);
+    if (length < response.inline_data.size()) {
+      *os << "<...truncated due to length...>";
+    }
+  }
+  *os << "]}";
+}
+
+}  // namespace storage