Implement BackgroundFetchManager.fetch() and struct traits

content/common/background_fetch/background_fetch_struct_traits.h

Index: content/common/background_fetch/background_fetch_struct_traits.h
diff --git a/content/common/background_fetch/background_fetch_struct_traits.h b/content/common/background_fetch/background_fetch_struct_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..c824610e2b29c85016fa5769692fa7500ff3737e
--- /dev/null
+++ b/content/common/background_fetch/background_fetch_struct_traits.h
@@ -0,0 +1,82 @@
+// Copyright 2017 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_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_STRUCT_TRAITS_H_
+#define CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_STRUCT_TRAITS_H_
+
+#include <string>
+#include <vector>
+
+#include "content/common/background_fetch/background_fetch_types.h"
+#include "content/common/content_export.h"
+#include "mojo/public/cpp/bindings/struct_traits.h"
+#include "third_party/WebKit/public/platform/modules/background_fetch/background_fetch.mojom.h"
+
+namespace mojo {
+
+template <>
+struct CONTENT_EXPORT StructTraits<blink::mojom::BackgroundFetchOptionsDataView,
+                                   content::BackgroundFetchOptions> {
+  static const std::vector<content::IconDefinition>& icons(
+      const content::BackgroundFetchOptions& options) {
+    return options.icons;
+  }
+  static const std::string& title(
+      const content::BackgroundFetchOptions& options) {
+    return options.title;
+  }
+  static int64_t total_download_size(
+      const content::BackgroundFetchOptions& options) {
+    return options.total_download_size;
+  }
+
+  static bool Read(blink::mojom::BackgroundFetchOptionsDataView data,
+                   content::BackgroundFetchOptions* options);
+};
+
+template <>
+struct CONTENT_EXPORT
+    StructTraits<blink::mojom::BackgroundFetchRegistrationDataView,
+                 content::BackgroundFetchRegistration> {
+  static const std::string& tag(
+      const content::BackgroundFetchRegistration& registration) {
+    return registration.tag;
+  }
+  static const std::vector<content::IconDefinition>& icons(
+      const content::BackgroundFetchRegistration& registration) {
+    return registration.icons;
+  }
+  static const std::string& title(
+      const content::BackgroundFetchRegistration& registration) {
+    return registration.title;
+  }
+  static int64_t total_download_size(
+      const content::BackgroundFetchRegistration& registration) {
+    return registration.total_download_size;
+  }
+
+  static bool Read(blink::mojom::BackgroundFetchRegistrationDataView data,
+                   content::BackgroundFetchRegistration* registration);
+};
+
+template <>
+struct CONTENT_EXPORT StructTraits<blink::mojom::IconDefinitionDataView,
+                                   content::IconDefinition> {
+  static const std::string& src(const content::IconDefinition& definition) {
+    return definition.src;
+  }
+  static const std::string& sizes(const content::IconDefinition& definition) {
+    return definition.sizes;
+  }
+  static const std::string& type(const content::IconDefinition& definition) {
+    return definition.type;
+  }
+
+  static bool Read(blink::mojom::IconDefinitionDataView data,
+                   content::IconDefinition* definition);
+};
+
+}  // namespace mojo
+
+#endif  // CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_STRUCT_TRAITS_H_