Eliminate MediaPlayer abstraction(seek, duration, poster APIs)

Source/core/html/HTMLVideoElement.cpp

Index: Source/core/html/HTMLVideoElement.cpp
diff --git a/Source/core/html/HTMLVideoElement.cpp b/Source/core/html/HTMLVideoElement.cpp
index 335f67981e476abe2b83f57a74491c5fa637b3b2..9f378c4b760cc528d771e922eeab60831dd3aa64 100644
--- a/Source/core/html/HTMLVideoElement.cpp
+++ b/Source/core/html/HTMLVideoElement.cpp
@@ -123,8 +123,8 @@ void HTMLVideoElement::parseAttribute(const QualifiedName& name, const AtomicStr
                 toRenderImage(renderer())->imageResource()->setImageResource(0);
         }
         // Notify the player when the poster image URL changes.
-        if (player())
-            player()->setPoster(posterImageURL());
+        if (webMediaPlayer())
+            webMediaPlayer()->setPoster(posterImageURL());
     } else
         HTMLMediaElement::parseAttribute(name, value);
 }