Implement Android shared memory data fetcher for Device Motion.

content/browser/device_orientation/data_fetcher_shared_memory_android.cc

+// Copyright (c) 2013 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 "data_fetcher_shared_memory.h"
+
+#include "base/logging.h"
+#include "data_fetcher_impl_android.h"
+
+namespace content {
+
+DataFetcherSharedMemory::~DataFetcherSharedMemory() {
+  StopFetchingDeviceMotionData();
+}
+
+bool DataFetcherSharedMemory::NeedsPolling() {
+  return DataFetcherImplAndroid::GetInstance()->NeedsPolling();

[bulach, 2013/07/12 14:00:41]

nit: I think this can return false directly..

[timvolodine, 2013/07/12 15:22:18]

Done.

+}
+
+bool DataFetcherSharedMemory::FetchDeviceMotionDataIntoBuffer() {
+  return DataFetcherImplAndroid::GetInstance()->
+      FetchDeviceMotionDataIntoBuffer();
+}
+
+bool DataFetcherSharedMemory::StartFetchingDeviceMotionData(
+  DeviceMotionHardwareBuffer* buffer) {

[bulach, 2013/07/12 14:00:41]

nit: indent +2

[timvolodine, 2013/07/12 15:22:18]

Done.

+  device_motion_buffer_ = buffer;
+  return DataFetcherImplAndroid::GetInstance()->
+      StartFetchingDeviceMotionData(buffer);
+}
+
+void DataFetcherSharedMemory::StopFetchingDeviceMotionData() {
+    DataFetcherImplAndroid::GetInstance()->StopFetchingDeviceMotionData();
+}
+
+}  // namespace content