Initial framework setup and skeleton for BackgroundFetchContext

content/browser/background_fetch/background_fetch_data_manager.cc

Index: content/browser/background_fetch/background_fetch_data_manager.cc
diff --git a/content/browser/background_fetch/background_fetch_data_manager.cc b/content/browser/background_fetch/background_fetch_data_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2ec636404ad2036fb6d152f8c07f9f06baa22227
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+++ b/content/browser/background_fetch/background_fetch_data_manager.cc
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+// 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.
+
+#include "content/browser/background_fetch/background_fetch_data_manager.h"
+
+#include "content/browser/background_fetch/background_fetch_context.h"
+#include "content/browser/background_fetch/fetch_request.h"
+
+namespace content {
+
+BackgroundFetchDataManager::BackgroundFetchDataManager(
+    BackgroundFetchContext* background_fetch_context)
+    : background_fetch_context_(background_fetch_context) {
+  DCHECK(background_fetch_context_);
+  // TODO(harkness) Read from persistent storage and recreate requests.
+}
+
+BackgroundFetchDataManager::~BackgroundFetchDataManager() {}
+
+void BackgroundFetchDataManager::CreateRequest(
+    const FetchRequest& fetch_request) {
+  FetchIdentifier id(fetch_request.sw_registration_id(), fetch_request.tag());
+  if (fetch_map_.find(id) != fetch_map_.end()) {
+    DLOG(ERROR) << "Origin " << fetch_request.origin()
+                << " has already created a fetch request with tag "
+                << fetch_request.tag();
+    // TODO(harkness) Figure out how to return errors like this.
+    return;
+  }
+  fetch_map_[id] = fetch_request;
+}
+
+}  // namespace content