Remove some weird comments that are not really necessary causing confusion.

Source/core/rendering/RenderMedia.cpp

Index: Source/core/rendering/RenderMedia.cpp
diff --git a/Source/core/rendering/RenderMedia.cpp b/Source/core/rendering/RenderMedia.cpp
index a3197d36453e03824b93dfa04a689d8dfb44992b..c69b112c106fdc063bd08e38a5f1ae3f5ff659d7 100644
--- a/Source/core/rendering/RenderMedia.cpp
+++ b/Source/core/rendering/RenderMedia.cpp
@@ -64,9 +64,6 @@ void RenderMedia::layout()
     if (newSize == oldSize && !controlsNeedLayout)
         return;
 
-    // When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
-    // instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
-    // and this method will be called many times per second during playback, use a LayoutStateMaintainer:
     LayoutStateMaintainer statePusher(this, locationOffset());
 
     controlsRenderer->setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));