Change original WebMediaPlayer signatures from float to double.

webkit/media/webmediaplayer_util.cc

 // Copyright (c) 2012 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 "webkit/media/webmediaplayer_util.h"
 
 #include <math.h>
 
 namespace webkit_media {
 
-base::TimeDelta ConvertSecondsToTimestamp(float seconds) {
-  float microseconds = seconds * base::Time::kMicrosecondsPerSecond;
-  float integer = ceilf(microseconds);
-  float difference = integer - microseconds;
-
-  // Round down if difference is large enough.
-  if ((microseconds > 0 && difference > 0.5f) ||
-      (microseconds <= 0 && difference >= 0.5f)) {
-    integer -= 1.0f;
-  }
-
-  // Now we can safely cast to int64 microseconds.
-  return base::TimeDelta::FromMicroseconds(static_cast<int64>(integer));
+base::TimeDelta ConvertSecondsToTimestamp(double seconds) {
+  double microseconds = seconds * base::Time::kMicrosecondsPerSecond;
+  return base::TimeDelta::FromMicroseconds(
+      microseconds > 0 ? microseconds + 0.5 : ceil(microseconds - 0.5));
 }
 
 }  // namespace webkit_media