Move Device Sensors client files from Blink to //device/sensors client lib

device/sensors/public/cpp/motion_data.cc

Index: device/sensors/public/cpp/motion_data.cc
diff --git a/device/sensors/public/cpp/motion_data.cc b/device/sensors/public/cpp/motion_data.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2fb4580ea44cfbfb4a76cbefdfe7a32921b4ddee
--- /dev/null
+++ b/device/sensors/public/cpp/motion_data.cc
@@ -0,0 +1,21 @@
+// Copyright 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 "device/sensors/public/cpp/motion_data.h"
+
+#include <string.h>
+
+namespace device {
+
+MotionData::MotionData() {
+  // Make sure to zero out the memory so that there are no uninitialized bits.
+  // This object is used in the shared memory buffer and is memory copied by
+  // two processes. Valgrind will complain if we copy around memory that is
+  // only partially initialized.
+  memset(this, 0, sizeof(*this));
+}
+
+MotionData::MotionData(const MotionData& other) = default;
+
+}  // namespace device