Revert of Reland r165710 "Replace RenderFullScreen with top layer"

Source/core/rendering/RenderVideo.cpp

Index: Source/core/rendering/RenderVideo.cpp
diff --git a/Source/core/rendering/RenderVideo.cpp b/Source/core/rendering/RenderVideo.cpp
index b156fca11c4b0fcabe90479283608a80aaf48eee..57374941d833f6cb3a6f6a78b8220fe6df4f58c9 100644
--- a/Source/core/rendering/RenderVideo.cpp
+++ b/Source/core/rendering/RenderVideo.cpp
@@ -34,6 +34,7 @@
 #include "core/frame/FrameView.h"
 #include "core/rendering/LayoutRectRecorder.h"
 #include "core/rendering/PaintInfo.h"
+#include "core/rendering/RenderFullScreen.h"
 #include "platform/graphics/media/MediaPlayer.h"
 #include "public/platform/WebLayer.h"
 
@@ -234,4 +235,45 @@
     return !!mediaElement()->platformLayer();
 }
 
+static const RenderBlock* rendererPlaceholder(const RenderObject* renderer)
+{
+    RenderObject* parent = renderer->parent();
+    if (!parent)
+        return 0;
+
+    RenderFullScreen* fullScreen = parent->isRenderFullScreen() ? toRenderFullScreen(parent) : 0;
+    if (!fullScreen)
+        return 0;
+
+    return fullScreen->placeholder();
+}
+
+LayoutUnit RenderVideo::offsetLeft() const
+{
+    if (const RenderBlock* block = rendererPlaceholder(this))
+        return block->offsetLeft();
+    return RenderMedia::offsetLeft();
+}
+
+LayoutUnit RenderVideo::offsetTop() const
+{
+    if (const RenderBlock* block = rendererPlaceholder(this))
+        return block->offsetTop();
+    return RenderMedia::offsetTop();
+}
+
+LayoutUnit RenderVideo::offsetWidth() const
+{
+    if (const RenderBlock* block = rendererPlaceholder(this))
+        return block->offsetWidth();
+    return RenderMedia::offsetWidth();
+}
+
+LayoutUnit RenderVideo::offsetHeight() const
+{
+    if (const RenderBlock* block = rendererPlaceholder(this))
+        return block->offsetHeight();
+    return RenderMedia::offsetHeight();
+}
+
 } // namespace WebCore