Change original WebMediaPlayer signatures from float to double.

webkit/media/webmediaplayer_util.cc

Index: webkit/media/webmediaplayer_util.cc
diff --git a/webkit/media/webmediaplayer_util.cc b/webkit/media/webmediaplayer_util.cc
index e2d5ef8d62dcb5d2f275c3ed09c6584d56b5b11f..17e603ee7f4553dc3a36cfed13e82b1273b4c72b 100644
--- a/webkit/media/webmediaplayer_util.cc
+++ b/webkit/media/webmediaplayer_util.cc
@@ -8,19 +8,10 @@
 
 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