Move paint code from RenderBlockFlow into BlockFlowPainter.

Source/core/paint/BlockFlowPainter.cpp

Index: Source/core/paint/BlockFlowPainter.cpp
diff --git a/Source/core/paint/BlockFlowPainter.cpp b/Source/core/paint/BlockFlowPainter.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..1a66ed50f7de6e847477edbffb7c1d4ed1425e0e
--- /dev/null
+++ b/Source/core/paint/BlockFlowPainter.cpp
@@ -0,0 +1,47 @@
+// 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/BlockFlowPainter.h"
+
+#include "core/rendering/FloatingObjects.h"
+#include "core/rendering/PaintInfo.h"
+#include "core/rendering/RenderBlockFlow.h"
+
+namespace blink {
+
+void BlockFlowPainter::paintFloats(PaintInfo& paintInfo, const LayoutPoint& paintOffset, bool preservePhase)
+{
+    if (!m_renderBlockFlow.floatingObjects())
+        return;
+
+    const FloatingObjectSet& floatingObjectSet = m_renderBlockFlow.floatingObjects()->set();
+    FloatingObjectSetIterator end = floatingObjectSet.end();
+    for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
+        FloatingObject* floatingObject = it->get();
+        // Only paint the object if our m_shouldPaint flag is set.
+        if (floatingObject->shouldPaint() && !floatingObject->renderer()->hasSelfPaintingLayer()) {
+            PaintInfo currentPaintInfo(paintInfo);
+            currentPaintInfo.phase = preservePhase ? paintInfo.phase : PaintPhaseBlockBackground;
+            // FIXME: LayoutPoint version of xPositionForFloatIncludingMargin would make this much cleaner.
+            LayoutPoint childPoint = m_renderBlockFlow.flipFloatForWritingModeForChild(
+                floatingObject, LayoutPoint(paintOffset.x()
+                + m_renderBlockFlow.xPositionForFloatIncludingMargin(floatingObject) - floatingObject->renderer()->x(), paintOffset.y()
+                + m_renderBlockFlow.yPositionForFloatIncludingMargin(floatingObject) - floatingObject->renderer()->y()));
+            floatingObject->renderer()->paint(currentPaintInfo, childPoint);
+            if (!preservePhase) {
+                currentPaintInfo.phase = PaintPhaseChildBlockBackgrounds;
+                floatingObject->renderer()->paint(currentPaintInfo, childPoint);
+                currentPaintInfo.phase = PaintPhaseFloat;
+                floatingObject->renderer()->paint(currentPaintInfo, childPoint);
+                currentPaintInfo.phase = PaintPhaseForeground;
+                floatingObject->renderer()->paint(currentPaintInfo, childPoint);
+                currentPaintInfo.phase = PaintPhaseOutline;
+                floatingObject->renderer()->paint(currentPaintInfo, childPoint);
+            }
+        }
+    }
+}
+
+} // namespace blink