Update all float attributes in HTMLMediaElement and related objects to double

Source/WebCore/html/HTMLMediaElement.idl

Index: Source/WebCore/html/HTMLMediaElement.idl
diff --git a/Source/WebCore/html/HTMLMediaElement.idl b/Source/WebCore/html/HTMLMediaElement.idl
index cf5f30b88cb172b3deae519c7480f16d52eb1c08..c2b1e63d66617c980c7a557302b8476039b69187 100644
--- a/Source/WebCore/html/HTMLMediaElement.idl
+++ b/Source/WebCore/html/HTMLMediaElement.idl
@@ -62,13 +62,13 @@ readonly attribute unsigned short readyState;
 readonly attribute boolean seeking;
 
 // playback state
-[SetterRaisesException] attribute float currentTime;
+[SetterRaisesException] attribute double currentTime;
 readonly attribute double initialTime;
-readonly attribute float startTime;
-readonly attribute float duration;
+readonly attribute double startTime;
+readonly attribute double duration;
 readonly attribute boolean paused;
-attribute float defaultPlaybackRate;
-attribute float playbackRate;
+attribute double defaultPlaybackRate;
+attribute double playbackRate;
 readonly attribute TimeRanges played;
 readonly attribute TimeRanges seekable;
 readonly attribute boolean ended;
@@ -79,7 +79,7 @@ void pause();
 
 // controls
 attribute boolean controls;
-[SetterRaisesException] attribute float volume;
+[SetterRaisesException] attribute double volume;
 attribute boolean muted;
 [Reflect=muted] attribute boolean defaultMuted;