Move paint code from RenderImage/RenderVideo into ImagePainter/VideoPainter.

Source/core/paint/VideoPainter.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/paint/VideoPainter.h"
+
+#include "core/dom/Document.h"
+#include "core/frame/FrameView.h"
+#include "core/html/HTMLVideoElement.h"
+#include "core/paint/ImagePainter.h"
+#include "core/rendering/PaintInfo.h"
+#include "core/rendering/RenderVideo.h"
+#include "platform/geometry/LayoutPoint.h"
+#include "platform/graphics/GraphicsContextStateSaver.h"
+#include "platform/graphics/media/MediaPlayer.h"
+
+namespace blink {
+
+void VideoPainter::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
+{
+    WebMediaPlayer* mediaPlayer = m_renderVideo.mediaElement()->webMediaPlayer();
+    bool displayingPoster = m_renderVideo.videoElement()->shouldDisplayPosterImage();
+    if (!displayingPoster && !mediaPlayer)
+        return;
+
+    LayoutRect rect = m_renderVideo.videoBox();
+    if (rect.isEmpty())
+        return;
+    rect.moveBy(paintOffset);
+
+    LayoutRect contentRect = m_renderVideo.contentBoxRect();
+    contentRect.moveBy(paintOffset);
+    GraphicsContext* context = paintInfo.context;
+    bool clip = !contentRect.contains(rect);
+    if (clip) {
+        context->save();
+        context->clip(contentRect);
+    }
+
+    if (displayingPoster)
+        ImagePainter(m_renderVideo).paintIntoRect(context, rect);
+    else if ((m_renderVideo.document().view() && m_renderVideo.document().view()->paintBehavior() & PaintBehaviorFlattenCompositingLayers) || !m_renderVideo.acceleratedRenderingInUse())
+        m_renderVideo.videoElement()->paintCurrentFrameInContext(context, pixelSnappedIntRect(rect));
+
+    if (clip)
+        context->restore();
+}
+
+} // namespace blink