Delete PaintInvalidationState. It's unused.

sky/engine/core/rendering/PaintInvalidationState.cpp

Index: sky/engine/core/rendering/PaintInvalidationState.cpp
diff --git a/sky/engine/core/rendering/PaintInvalidationState.cpp b/sky/engine/core/rendering/PaintInvalidationState.cpp
deleted file mode 100644
index e0a2cc3ca74587f059b9c8c825facf085006f55f..0000000000000000000000000000000000000000
--- a/sky/engine/core/rendering/PaintInvalidationState.cpp
+++ /dev/null
@@ -1,95 +0,0 @@
-// 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 "sky/engine/config.h"
-#include "sky/engine/core/rendering/PaintInvalidationState.h"
-
-#include "sky/engine/core/rendering/RenderInline.h"
-#include "sky/engine/core/rendering/RenderLayer.h"
-#include "sky/engine/core/rendering/RenderView.h"
-#include "sky/engine/platform/Partitions.h"
-
-namespace blink {
-
-PaintInvalidationState::PaintInvalidationState(const RenderView& renderView)
-    : m_clipped(false)
-    , m_cachedOffsetsEnabled(true)
-    , m_forceCheckForPaintInvalidation(false)
-    , m_paintInvalidationContainer(*renderView.containerForPaintInvalidation())
-    , m_renderer(renderView)
-{
-    bool establishesPaintInvalidationContainer = &m_renderer == &m_paintInvalidationContainer;
-    if (!establishesPaintInvalidationContainer) {
-        if (!renderView.supportsPaintInvalidationStateCachedOffsets()) {
-            m_cachedOffsetsEnabled = false;
-            return;
-        }
-        FloatPoint point = renderView.localToContainerPoint(FloatPoint(), &m_paintInvalidationContainer, TraverseDocumentBoundaries);
-        m_paintOffset = LayoutSize(point.x(), point.y());
-    }
-    m_clipRect = renderView.viewRect();
-    m_clipRect.move(m_paintOffset);
-    m_clipped = true;
-}
-
-PaintInvalidationState::PaintInvalidationState(const PaintInvalidationState& next, RenderLayerModelObject& renderer, const RenderLayerModelObject& paintInvalidationContainer)
-    : m_clipped(false)
-    , m_cachedOffsetsEnabled(true)
-    , m_forceCheckForPaintInvalidation(next.m_forceCheckForPaintInvalidation)
-    , m_paintInvalidationContainer(paintInvalidationContainer)
-    , m_renderer(renderer)
-{
-    // FIXME: SVG could probably benefit from a stack-based optimization like html does. crbug.com/391054
-    bool establishesPaintInvalidationContainer = &m_renderer == &m_paintInvalidationContainer;
-
-    if (establishesPaintInvalidationContainer) {
-        // When we hit a new paint invalidation container, we don't need to
-        // continue forcing a check for paint invalidation because movement
-        // from our parents will just move the whole invalidation container.
-        m_forceCheckForPaintInvalidation = false;
-    } else {
-        if (!renderer.supportsPaintInvalidationStateCachedOffsets() || !next.m_cachedOffsetsEnabled) {
-            m_cachedOffsetsEnabled = false;
-        } else {
-            LayoutSize offset = m_renderer.isBox() ? toRenderBox(renderer).locationOffset() : LayoutSize();
-            m_paintOffset = next.m_paintOffset + offset;
-
-            if (m_renderer.isOutOfFlowPositioned()) {
-                if (RenderObject* container = m_renderer.container()) {
-                    if (container->style()->hasInFlowPosition() && container->isRenderInline())
-                        m_paintOffset += toRenderInline(container)->offsetForInFlowPositionedInline(toRenderBox(renderer));
-                }
-            }
-
-            if (m_renderer.style()->hasInFlowPosition() && renderer.hasLayer())
-                m_paintOffset += renderer.layer()->offsetForInFlowPosition();
-        }
-
-        m_clipped = next.m_clipped;
-        if (m_clipped)
-            m_clipRect = next.m_clipRect;
-    }
-
-    applyClipIfNeeded(renderer);
-
-    // FIXME: <http://bugs.webkit.org/show_bug.cgi?id=13443> Apply control clip if present.
-}
-
-void PaintInvalidationState::applyClipIfNeeded(const RenderObject& renderer)
-{
-    if (!renderer.hasOverflowClip())
-        return;
-
-    const RenderBox& box = toRenderBox(renderer);
-    LayoutRect clipRect(toPoint(m_paintOffset), box.layer()->size());
-    if (m_clipped) {
-        m_clipRect.intersect(clipRect);
-    } else {
-        m_clipRect = clipRect;
-        m_clipped = true;
-    }
-    m_paintOffset -= box.scrolledContentOffset();
-}
-
-} // namespace blink