Move WebMediaPlayer and friends to public/platform/

public/platform/WebMediaPlayer.h

Index: public/platform/WebMediaPlayer.h
diff --git a/public/web/WebMediaPlayer.h b/public/platform/WebMediaPlayer.h
similarity index 96%
copy from public/web/WebMediaPlayer.h
copy to public/platform/WebMediaPlayer.h
index 5eb9c065e1cf6b64740cffd9ef96afe2cb0fe2a2..0043690c10da0e448a585c1b438dba470bb7458f 100644
--- a/public/web/WebMediaPlayer.h
+++ b/public/platform/WebMediaPlayer.h
@@ -31,10 +31,10 @@
 #ifndef WebMediaPlayer_h
 #define WebMediaPlayer_h
 
-#include "../platform/WebCanvas.h"
-#include "../platform/WebMediaSource.h"
-#include "../platform/WebString.h"
-#include "../platform/WebTimeRange.h"
+#include "WebCanvas.h"
+#include "WebMediaSource.h"
+#include "WebString.h"
+#include "WebTimeRange.h"
 
 namespace blink {
 
@@ -103,8 +103,8 @@ public:
     virtual bool supportsFullscreen() const = 0;
     virtual bool supportsSave() const = 0;
     virtual void seek(double seconds) = 0;
-    virtual void setRate(double rate)  = 0;
-    virtual void setVolume(double volume) = 0;
+    virtual void setRate(double) = 0;
+    virtual void setVolume(double) = 0;
     virtual void setPreload(Preload) { };
     virtual const WebTimeRanges& buffered() = 0;
     virtual double maxTimeSeekable() const = 0;