Battery Status API: implementation for Linux.

content/browser/battery_status/battery_status_manager_linux.h

+// Copyright 2014 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 CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_LINUX_H_
+#define CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_LINUX_H_
+
+#include "content/browser/battery_status/battery_status_manager.h"
+#include "content/common/content_export.h"
+
+namespace base {
+class DictionaryValue;
+}
+
+namespace content {
+
+// State reflects the possible UPower.Device.State values,
+// see upower.freedesktop.org/docs/Device.html#Device:State.
+enum UPowerDeviceState {
+  UPOWER_DEVICE_STATE_UNKNOWN = 0,
+  UPOWER_DEVICE_STATE_CHARGING = 1,
+  UPOWER_DEVICE_STATE_DISCHARGING = 2,
+  UPOWER_DEVICE_STATE_EMPTY = 3,
+  UPOWER_DEVICE_STATE_FULL = 4,
+  UPOWER_DEVICE_STATE_PENDING_CHARGE = 5,
+  UPOWER_DEVICE_STATE_PENDING_DISCHARGE = 6,
+};
+
+CONTENT_EXPORT void ComputeWebBatteryStatus(

[Michael van Ouwerkerk, 2014/08/08 14:54:59]

Why does this need CONTENT_EXPORT?

[mlamouri (slow - plz ping), 2014/08/08 17:31:00]

To be used in the unit test I presume.

[timvolodine, 2014/08/08 18:46:45]

yes, unittests are a separate library so need to export this otherwise won't
link.

+    const base::DictionaryValue& dictionary, blink::WebBatteryStatus& status);

[mlamouri (slow - plz ping), 2014/08/07 16:17:04]

Could you add a comment describing what this is doing.

[timvolodine, 2014/08/08 18:46:45]

Done.

+
+}  // namespace content
+
+#endif  // CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_LINUX_H_