Media Controls: Fix seek to end when max attr is rounded up

third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp

Index: third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
index 567a7a7586c5d42f09d9217ab8a3fbba13960162..ff8d47b2985330d24408d1c417a86a6299e07758 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.cpp
@@ -770,6 +770,13 @@ void MediaControlTimelineElement::defaultEventHandler(Event* event) {
 
   double time = value().toDouble();
 
+  double duration = mediaElement().duration();
+  // Workaround for floating point error - it's possible for this element's max
+  // attribute to be rounded to a value slightly higher than the duration. If
+  // this happens and scrubber is dragged near the max, seek to duration.
+  if (time > duration)
+    time = duration;
+
   // FIXME: This will need to take the timeline offset into consideration
   // once that concept is supported, see https://crbug.com/312699
   if (mediaElement().seekable()->contain(time))