Eliminate MediaPlayer & MediaPlayerClient abstractions(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 7748b964d1893c7670773a8fea40ff6241c94855..34a0fbb3365e83cf82e9fbd1dace707cb07ab78d 100644
--- a/Source/core/html/HTMLVideoElement.cpp
+++ b/Source/core/html/HTMLVideoElement.cpp
@@ -115,8 +115,8 @@ 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);
 }