DevTools: Introduce Page.getManifest remote debugging protocol method.

content/renderer/manifest/manifest_debug_info.h

+// Copyright 2016 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.
+
+#ifndef CONTENT_RENDERER_MANIFEST_MANIFEST_DEBUG_INFO_H_
+#define CONTENT_RENDERER_MANIFEST_MANIFEST_DEBUG_INFO_H_
+
+#include <string>
+#include <vector>
+
+namespace content {
+
+struct ManifestDebugInfo {
+  struct Error {
+    Error(const std::string& message, int line, int column)
+        : message(message),
+          line(line),
+          column(column) {}
+    std::string message;
+    int line;
+    int column;
+  };
+
+  ManifestDebugInfo();
+  ~ManifestDebugInfo();
+  std::vector<Error> errors;
+  std::string raw_data;
+};
+
+} // namespace content
+
+#endif  // CONTENT_RENDERER_MANIFEST_MANIFEST_DEBUG_INFO_H_