Migrate files to embedder.

samples/android_sample/jni/timer.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#include "jni/timer.h"
-
-Timer::Timer() : elapsed_(0.0f), last_time_(0.0) {
-}
-
-void Timer::reset() {
-  elapsed_ = 0.0f;
-  last_time_ = now();
-}
-
-void Timer::update() {
-  double current = now();
-  elapsed_ = (current - last_time_);
-  last_time_ = current;
-}
-
-double Timer::now() {
-  timespec timeval;
-  clock_gettime(CLOCK_MONOTONIC, &timeval);
-  return timeval.tv_sec + (timeval.tv_nsec * 1.0e-9);
-}
-
-float Timer::elapsed() {
-  return elapsed_;
-}