Update all float attributes in HTMLMediaElement and related objects to double

Source/WebCore/platform/Clock.h

 /*
  * Copyright (C) 2011 Apple Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 18 matching lines @@
 #include <wtf/PassRefPtr.h>
 #include <wtf/RefCounted.h>
 
 namespace WebCore {
 
 class Clock : public RefCounted<Clock> {
 public:
     static PassRefPtr<Clock> create();
     virtual ~Clock() { }
 
-    virtual void setCurrentTime(float) = 0;
-    virtual float currentTime() const = 0;
+    virtual void setCurrentTime(double) = 0;
+    virtual double currentTime() const = 0;
 
-    virtual void setPlayRate(float) = 0;
-    virtual float playRate() const = 0;
+    virtual void setPlayRate(double) = 0;
+    virtual double playRate() const = 0;
 
     virtual void start() = 0;
     virtual void stop() = 0;
     virtual bool isRunning() const = 0;
 
 protected:
     Clock() { }
 };
 
 }
 
 #endif