Read and expose accelerometer values from cros-ec-accel trigger.

ash/accelerometer/accelerometer_controller.cc

+// 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.
+
+#include "ash/accelerometer/accelerometer_controller.h"
+
+#include "ash/accelerometer/accelerometer_observer.h"
+#include "ui/gfx/geometry/vector3d_f.h"
+
+namespace ash {
+
+AccelerometerController::AccelerometerController()
+#if defined(OS_CHROMEOS)
+    : reader_(this)
+#endif
+{
+}
+
+AccelerometerController::~AccelerometerController() {
+}
+
+void AccelerometerController::AddObserver(AccelerometerObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void AccelerometerController::RemoveObserver(AccelerometerObserver* observer) {
+  observers_.RemoveObserver(observer);
+}
+
+#if defined(OS_CHROMEOS)
+void AccelerometerController::OnAccelerometerRead(const gfx::Vector3dF& base,
+                                                  const gfx::Vector3dF& lid) {
+  FOR_EACH_OBSERVER(AccelerometerObserver, observers_,
+      OnAccelerometerUpdated(base, lid));
+}
+#endif
+
+}  // namespace ash