Upstream oodles of Chrome for Android code into Chromium.

chrome/browser/android/history_report/get_all_urls_from_history_task.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 "chrome/browser/android/history_report/get_all_urls_from_history_task.h"
+
+#include "base/bind.h"
+#include "components/history/core/browser/history_backend.h"
+#include "components/history/core/browser/history_database.h"
+#include "components/history/core/browser/history_types.h"
+#include "components/history/core/browser/url_database.h"
+#include "components/history/core/browser/url_row.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace history_report {
+
+GetAllUrlsFromHistoryTask::GetAllUrlsFromHistoryTask(
+    base::WaitableEvent* wait_event,
+    std::vector<std::string>* urls)
+    : urls_(urls),
+      wait_event_(wait_event) {
+}
+
+bool GetAllUrlsFromHistoryTask::RunOnDBThread(
+    history::HistoryBackend* backend,
+    history::HistoryDatabase* db) {
+
+  history::URLDatabase::URLEnumerator it;
+  db->InitURLEnumeratorForEverything(&it);
+
+  history::URLRow row;
+  while (it.GetNextURL(&row)) {
+    if (row.url().is_valid()) {
+      urls_->push_back(row.url().spec());
+    }
+  }
+
+  wait_event_->Signal();
+  return true;
+}
+
+}  // namespace history_report