Make scrubbing a MediaControls-internal concept

Source/core/html/MediaController.cpp

Index: Source/core/html/MediaController.cpp
diff --git a/Source/core/html/MediaController.cpp b/Source/core/html/MediaController.cpp
index 26ad8359ede7a673c9205cd615e4bba043aa0774..6ab9bf16ad11b896c6b9213f91b302541fc412fb 100644
--- a/Source/core/html/MediaController.cpp
+++ b/Source/core/html/MediaController.cpp
@@ -596,22 +596,6 @@ bool MediaController::hasAudio() const
     return false;
 }
 
-void MediaController::beginScrubbing()
-{
-    for (size_t index = 0; index < m_mediaElements.size(); ++index)
-        m_mediaElements[index]->beginScrubbing();
-    if (m_playbackState == PLAYING)
-        m_clock->stop();
-}
-
-void MediaController::endScrubbing()
-{
-    for (size_t index = 0; index < m_mediaElements.size(); ++index)
-        m_mediaElements[index]->endScrubbing();
-    if (m_playbackState == PLAYING)
-        m_clock->start();
-}
-
 bool MediaController::canPlay() const
 {
     if (m_paused)