[cc] Rename all cc/ filenames to Chromium style

cc/LayerChromium.cpp

-// Copyright 2010 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"
-
-#if USE(ACCELERATED_COMPOSITING)
-#include "LayerChromium.h"
-
-#include "CCActiveAnimation.h"
-#include "CCAnimationEvents.h"
-#include "CCLayerAnimationController.h"
-#include "CCLayerImpl.h"
-#include "CCLayerTreeHost.h"
-#include "CCSettings.h"
-#include <public/WebAnimationDelegate.h>
-#include <public/WebLayerScrollClient.h>
-#include <public/WebSize.h>
-
-using namespace std;
-using WebKit::WebTransformationMatrix;
-
-namespace cc {
-
-static int s_nextLayerId = 1;
-
-scoped_refptr<LayerChromium> LayerChromium::create()
-{
-    return make_scoped_refptr(new LayerChromium());
-}
-
-LayerChromium::LayerChromium()
-    : m_needsDisplay(false)
-    , m_stackingOrderChanged(false)
-    , m_layerId(s_nextLayerId++)
-    , m_parent(0)
-    , m_layerTreeHost(0)
-    , m_layerAnimationController(CCLayerAnimationController::create(this))
-    , m_scrollable(false)
-    , m_shouldScrollOnMainThread(false)
-    , m_haveWheelEventHandlers(false)
-    , m_nonFastScrollableRegionChanged(false)
-    , m_anchorPoint(0.5, 0.5)
-    , m_backgroundColor(0)
-    , m_debugBorderColor(0)
-    , m_debugBorderWidth(0)
-    , m_opacity(1.0)
-    , m_anchorPointZ(0)
-    , m_isContainerForFixedPositionLayers(false)
-    , m_fixedToContainerLayer(false)
-    , m_isDrawable(false)
-    , m_masksToBounds(false)
-    , m_contentsOpaque(false)
-    , m_doubleSided(true)
-    , m_useLCDText(false)
-    , m_preserves3D(false)
-    , m_useParentBackfaceVisibility(false)
-    , m_drawCheckerboardForMissingTiles(false)
-    , m_forceRenderSurface(false)
-    , m_replicaLayer(0)
-    , m_drawOpacity(0)
-    , m_drawOpacityIsAnimating(false)
-    , m_renderTarget(0)
-    , m_drawTransformIsAnimating(false)
-    , m_screenSpaceTransformIsAnimating(false)
-    , m_contentsScale(1.0)
-    , m_boundsContainPageScale(false)
-    , m_layerAnimationDelegate(0)
-    , m_layerScrollClient(0)
-{
-    if (m_layerId < 0) {
-        s_nextLayerId = 1;
-        m_layerId = s_nextLayerId++;
-    }
-}
-
-LayerChromium::~LayerChromium()
-{
-    // Our parent should be holding a reference to us so there should be no
-    // way for us to be destroyed while we still have a parent.
-    ASSERT(!parent());
-
-    // Remove the parent reference from all children.
-    removeAllChildren();
-}
-
-void LayerChromium::setUseLCDText(bool useLCDText)
-{
-    m_useLCDText = useLCDText;
-}
-
-void LayerChromium::setLayerTreeHost(CCLayerTreeHost* host)
-{
-    if (m_layerTreeHost == host)
-        return;
-
-    m_layerTreeHost = host;
-
-    for (size_t i = 0; i < m_children.size(); ++i)
-        m_children[i]->setLayerTreeHost(host);
-
-    if (m_maskLayer)
-        m_maskLayer->setLayerTreeHost(host);
-    if (m_replicaLayer)
-        m_replicaLayer->setLayerTreeHost(host);
-
-    // If this layer already has active animations, the host needs to be notified.
-    if (host && m_layerAnimationController->hasActiveAnimation())
-        host->didAddAnimation();
-}
-
-void LayerChromium::setNeedsCommit()
-{
-    if (m_layerTreeHost)
-        m_layerTreeHost->setNeedsCommit();
-}
-
-IntRect LayerChromium::layerRectToContentRect(const WebKit::WebRect& layerRect)
-{
-    float widthScale = static_cast<float>(contentBounds().width()) / bounds().width();
-    float heightScale = static_cast<float>(contentBounds().height()) / bounds().height();
-    FloatRect contentRect(layerRect.x, layerRect.y, layerRect.width, layerRect.height);
-    contentRect.scale(widthScale, heightScale);
-    return enclosingIntRect(contentRect);
-}
-
-void LayerChromium::setParent(LayerChromium* layer)
-{
-    ASSERT(!layer || !layer->hasAncestor(this));
-    m_parent = layer;
-    setLayerTreeHost(m_parent ? m_parent->layerTreeHost() : 0);
-}
-
-bool LayerChromium::hasAncestor(LayerChromium* ancestor) const
-{
-    for (LayerChromium* layer = parent(); layer; layer = layer->parent()) {
-        if (layer == ancestor)
-            return true;
-    }
-    return false;
-}
-
-void LayerChromium::addChild(scoped_refptr<LayerChromium> child)
-{
-    insertChild(child, numChildren());
-}
-
-void LayerChromium::insertChild(scoped_refptr<LayerChromium> child, size_t index)
-{
-    index = min(index, m_children.size());
-    child->removeFromParent();
-    child->setParent(this);
-    child->m_stackingOrderChanged = true;
-
-    LayerList::iterator iter = m_children.begin();
-    m_children.insert(iter + index, child);
-    setNeedsCommit();
-}
-
-void LayerChromium::removeFromParent()
-{
-    if (m_parent)
-        m_parent->removeChild(this);
-}
-
-void LayerChromium::removeChild(LayerChromium* child)
-{
-    for (LayerList::iterator iter = m_children.begin(); iter != m_children.end(); ++iter)
-    {
-        if (*iter != child)
-            continue;
-
-        child->setParent(0);
-        m_children.erase(iter);
-        setNeedsCommit();
-        return;
-    }
-}
-
-void LayerChromium::replaceChild(LayerChromium* reference, scoped_refptr<LayerChromium> newLayer)
-{
-    ASSERT_ARG(reference, reference);
-    ASSERT_ARG(reference, reference->parent() == this);
-
-    if (reference == newLayer)
-        return;
-
-    int referenceIndex = indexOfChild(reference);
-    if (referenceIndex == -1) {
-        ASSERT_NOT_REACHED();
-        return;
-    }
-
-    reference->removeFromParent();
-
-    if (newLayer) {
-        newLayer->removeFromParent();
-        insertChild(newLayer, referenceIndex);
-    }
-}
-
-int LayerChromium::indexOfChild(const LayerChromium* reference)
-{
-    for (size_t i = 0; i < m_children.size(); i++) {
-        if (m_children[i] == reference)
-            return i;
-    }
-    return -1;
-}
-
-void LayerChromium::setBounds(const IntSize& size)
-{
-    if (bounds() == size)
-        return;
-
-    bool firstResize = bounds().isEmpty() && !size.isEmpty();
-
-    m_bounds = size;
-
-    if (firstResize)
-        setNeedsDisplay();
-    else
-        setNeedsCommit();
-}
-
-LayerChromium* LayerChromium::rootLayer()
-{
-    LayerChromium* layer = this;
-    while (layer->parent())
-        layer = layer->parent();
-    return layer;
-}
-
-void LayerChromium::removeAllChildren()
-{
-    while (m_children.size()) {
-        LayerChromium* layer = m_children[0].get();
-        ASSERT(layer->parent());
-        layer->removeFromParent();
-    }
-}
-
-void LayerChromium::setChildren(const LayerList& children)
-{
-    if (children == m_children)
-        return;
-
-    removeAllChildren();
-    size_t listSize = children.size();
-    for (size_t i = 0; i < listSize; i++)
-        addChild(children[i]);
-}
-
-void LayerChromium::setAnchorPoint(const FloatPoint& anchorPoint)
-{
-    if (m_anchorPoint == anchorPoint)
-        return;
-    m_anchorPoint = anchorPoint;
-    setNeedsCommit();
-}
-
-void LayerChromium::setAnchorPointZ(float anchorPointZ)
-{
-    if (m_anchorPointZ == anchorPointZ)
-        return;
-    m_anchorPointZ = anchorPointZ;
-    setNeedsCommit();
-}
-
-void LayerChromium::setBackgroundColor(SkColor backgroundColor)
-{
-    if (m_backgroundColor == backgroundColor)
-        return;
-    m_backgroundColor = backgroundColor;
-    setNeedsCommit();
-}
-
-IntSize LayerChromium::contentBounds() const
-{
-    return bounds();
-}
-
-void LayerChromium::setMasksToBounds(bool masksToBounds)
-{
-    if (m_masksToBounds == masksToBounds)
-        return;
-    m_masksToBounds = masksToBounds;
-    setNeedsCommit();
-}
-
-void LayerChromium::setMaskLayer(LayerChromium* maskLayer)
-{
-    if (m_maskLayer == maskLayer)
-        return;
-    if (m_maskLayer)
-        m_maskLayer->setLayerTreeHost(0);
-    m_maskLayer = maskLayer;
-    if (m_maskLayer) {
-        m_maskLayer->setLayerTreeHost(m_layerTreeHost);
-        m_maskLayer->setIsMask(true);
-    }
-    setNeedsCommit();
-}
-
-void LayerChromium::setReplicaLayer(LayerChromium* layer)
-{
-    if (m_replicaLayer == layer)
-        return;
-    if (m_replicaLayer)
-        m_replicaLayer->setLayerTreeHost(0);
-    m_replicaLayer = layer;
-    if (m_replicaLayer)
-        m_replicaLayer->setLayerTreeHost(m_layerTreeHost);
-    setNeedsCommit();
-}
-
-void LayerChromium::setFilters(const WebKit::WebFilterOperations& filters)
-{
-    if (m_filters == filters)
-        return;
-    m_filters = filters;
-    setNeedsCommit();
-    if (!filters.isEmpty())
-        CCLayerTreeHost::setNeedsFilterContext(true);
-}
-
-void LayerChromium::setBackgroundFilters(const WebKit::WebFilterOperations& backgroundFilters)
-{
-    if (m_backgroundFilters == backgroundFilters)
-        return;
-    m_backgroundFilters = backgroundFilters;
-    setNeedsCommit();
-    if (!backgroundFilters.isEmpty())
-        CCLayerTreeHost::setNeedsFilterContext(true);
-}
-
-bool LayerChromium::needsDisplay() const
-{
-    return m_needsDisplay;
-}
-
-void LayerChromium::setOpacity(float opacity)
-{
-    if (m_opacity == opacity)
-        return;
-    m_opacity = opacity;
-    setNeedsCommit();
-}
-
-bool LayerChromium::opacityIsAnimating() const
-{
-    return m_layerAnimationController->isAnimatingProperty(CCActiveAnimation::Opacity);
-}
-
-void LayerChromium::setContentsOpaque(bool opaque)
-{
-    if (m_contentsOpaque == opaque)
-        return;
-    m_contentsOpaque = opaque;
-    setNeedsDisplay();
-}
-
-void LayerChromium::setPosition(const FloatPoint& position)
-{
-    if (m_position == position)
-        return;
-    m_position = position;
-    setNeedsCommit();
-}
-
-void LayerChromium::setSublayerTransform(const WebTransformationMatrix& sublayerTransform)
-{
-    if (m_sublayerTransform == sublayerTransform)
-        return;
-    m_sublayerTransform = sublayerTransform;
-    setNeedsCommit();
-}
-
-void LayerChromium::setTransform(const WebTransformationMatrix& transform)
-{
-    if (m_transform == transform)
-        return;
-    m_transform = transform;
-    setNeedsCommit();
-}
-
-bool LayerChromium::transformIsAnimating() const
-{
-    return m_layerAnimationController->isAnimatingProperty(CCActiveAnimation::Transform);
-}
-
-void LayerChromium::setScrollPosition(const IntPoint& scrollPosition)
-{
-    if (m_scrollPosition == scrollPosition)
-        return;
-    m_scrollPosition = scrollPosition;
-    if (m_layerScrollClient)
-        m_layerScrollClient->didScroll();
-    setNeedsCommit();
-}
-
-void LayerChromium::setMaxScrollPosition(const IntSize& maxScrollPosition)
-{
-    if (m_maxScrollPosition == maxScrollPosition)
-        return;
-    m_maxScrollPosition = maxScrollPosition;
-    setNeedsCommit();
-}
-
-void LayerChromium::setScrollable(bool scrollable)
-{
-    if (m_scrollable == scrollable)
-        return;
-    m_scrollable = scrollable;
-    setNeedsCommit();
-}
-
-void LayerChromium::setShouldScrollOnMainThread(bool shouldScrollOnMainThread)
-{
-    if (m_shouldScrollOnMainThread == shouldScrollOnMainThread)
-        return;
-    m_shouldScrollOnMainThread = shouldScrollOnMainThread;
-    setNeedsCommit();
-}
-
-void LayerChromium::setHaveWheelEventHandlers(bool haveWheelEventHandlers)
-{
-    if (m_haveWheelEventHandlers == haveWheelEventHandlers)
-        return;
-    m_haveWheelEventHandlers = haveWheelEventHandlers;
-    setNeedsCommit();
-}
-
-void LayerChromium::setNonFastScrollableRegion(const Region& region)
-{
-    if (m_nonFastScrollableRegion == region)
-        return;
-    m_nonFastScrollableRegion = region;
-    m_nonFastScrollableRegionChanged = true;
-    setNeedsCommit();
-}
-
-void LayerChromium::setDrawCheckerboardForMissingTiles(bool checkerboard)
-{
-    if (m_drawCheckerboardForMissingTiles == checkerboard)
-        return;
-    m_drawCheckerboardForMissingTiles = checkerboard;
-    setNeedsCommit();
-}
-
-void LayerChromium::setForceRenderSurface(bool force)
-{
-    if (m_forceRenderSurface == force)
-        return;
-    m_forceRenderSurface = force;
-    setNeedsCommit();
-}
-
-void LayerChromium::setImplTransform(const WebTransformationMatrix& transform)
-{
-    if (m_implTransform == transform)
-        return;
-    m_implTransform = transform;
-    setNeedsCommit();
-}
-
-void LayerChromium::setDoubleSided(bool doubleSided)
-{
-    if (m_doubleSided == doubleSided)
-        return;
-    m_doubleSided = doubleSided;
-    setNeedsCommit();
-}
-
-void LayerChromium::setIsDrawable(bool isDrawable)
-{
-    if (m_isDrawable == isDrawable)
-        return;
-
-    m_isDrawable = isDrawable;
-    setNeedsCommit();
-}
-
-LayerChromium* LayerChromium::parent() const
-{
-    return m_parent;
-}
-
-void LayerChromium::setNeedsDisplayRect(const FloatRect& dirtyRect)
-{
-    m_updateRect.unite(dirtyRect);
-
-    // Simply mark the contents as dirty. For non-root layers, the call to
-    // setNeedsCommit will schedule a fresh compositing pass.
-    // For the root layer, setNeedsCommit has no effect.
-    if (!dirtyRect.isEmpty())
-        m_needsDisplay = true;
-
-    setNeedsCommit();
-}
-
-bool LayerChromium::descendantIsFixedToContainerLayer() const
-{
-    for (size_t i = 0; i < m_children.size(); ++i) {
-        if (m_children[i]->fixedToContainerLayer() || m_children[i]->descendantIsFixedToContainerLayer())
-            return true;
-    }
-    return false;
-}
-
-void LayerChromium::setIsContainerForFixedPositionLayers(bool isContainerForFixedPositionLayers)
-{
-    if (m_isContainerForFixedPositionLayers == isContainerForFixedPositionLayers)
-        return;
-    m_isContainerForFixedPositionLayers = isContainerForFixedPositionLayers;
-
-    if (m_layerTreeHost && m_layerTreeHost->commitRequested())
-        return;
-
-    // Only request a commit if we have a fixed positioned descendant.
-    if (descendantIsFixedToContainerLayer())
-        setNeedsCommit();
-}
-
-void LayerChromium::setFixedToContainerLayer(bool fixedToContainerLayer)
-{
-    if (m_fixedToContainerLayer == fixedToContainerLayer)
-        return;
-    m_fixedToContainerLayer = fixedToContainerLayer;
-    setNeedsCommit();
-}
-
-void LayerChromium::pushPropertiesTo(CCLayerImpl* layer)
-{
-    layer->setAnchorPoint(m_anchorPoint);
-    layer->setAnchorPointZ(m_anchorPointZ);
-    layer->setBackgroundColor(m_backgroundColor);
-    layer->setBounds(m_bounds);
-    layer->setContentBounds(contentBounds());
-    layer->setDebugBorderColor(m_debugBorderColor);
-    layer->setDebugBorderWidth(m_debugBorderWidth);
-    layer->setDebugName(m_debugName);
-    layer->setDoubleSided(m_doubleSided);
-    layer->setDrawCheckerboardForMissingTiles(m_drawCheckerboardForMissingTiles);
-    layer->setForceRenderSurface(m_forceRenderSurface);
-    layer->setDrawsContent(drawsContent());
-    layer->setFilters(filters());
-    layer->setBackgroundFilters(backgroundFilters());
-    layer->setUseLCDText(m_useLCDText);
-    layer->setMasksToBounds(m_masksToBounds);
-    layer->setScrollable(m_scrollable);
-    layer->setShouldScrollOnMainThread(m_shouldScrollOnMainThread);
-    layer->setHaveWheelEventHandlers(m_haveWheelEventHandlers);
-    // Copying a Region is more expensive than most layer properties, since it involves copying two Vectors that may be
-    // arbitrarily large depending on page content, so we only push the property if it's changed.
-    if (m_nonFastScrollableRegionChanged) {
-        layer->setNonFastScrollableRegion(m_nonFastScrollableRegion);
-        m_nonFastScrollableRegionChanged = false;
-    }
-    layer->setContentsOpaque(m_contentsOpaque);
-    if (!opacityIsAnimating())
-        layer->setOpacity(m_opacity);
-    layer->setPosition(m_position);
-    layer->setIsContainerForFixedPositionLayers(m_isContainerForFixedPositionLayers);
-    layer->setFixedToContainerLayer(m_fixedToContainerLayer);
-    layer->setPreserves3D(preserves3D());
-    layer->setUseParentBackfaceVisibility(m_useParentBackfaceVisibility);
-    layer->setScrollPosition(m_scrollPosition);
-    layer->setMaxScrollPosition(m_maxScrollPosition);
-    layer->setSublayerTransform(m_sublayerTransform);
-    if (!transformIsAnimating())
-        layer->setTransform(m_transform);
-
-    // If the main thread commits multiple times before the impl thread actually draws, then damage tracking
-    // will become incorrect if we simply clobber the updateRect here. The CCLayerImpl's updateRect needs to
-    // accumulate (i.e. union) any update changes that have occurred on the main thread.
-    m_updateRect.uniteIfNonZero(layer->updateRect());
-    layer->setUpdateRect(m_updateRect);
-
-    layer->setScrollDelta(layer->scrollDelta() - layer->sentScrollDelta());
-    layer->setSentScrollDelta(IntSize());
-
-    layer->setStackingOrderChanged(m_stackingOrderChanged);
-
-    if (maskLayer())
-        maskLayer()->pushPropertiesTo(layer->maskLayer());
-    if (replicaLayer())
-        replicaLayer()->pushPropertiesTo(layer->replicaLayer());
-
-    m_layerAnimationController->pushAnimationUpdatesTo(layer->layerAnimationController());
-
-    // Reset any state that should be cleared for the next update.
-    m_stackingOrderChanged = false;
-    m_updateRect = FloatRect();
-}
-
-scoped_ptr<CCLayerImpl> LayerChromium::createCCLayerImpl()
-{
-    return CCLayerImpl::create(m_layerId);
-}
-
-bool LayerChromium::drawsContent() const
-{
-    return m_isDrawable;
-}
-
-bool LayerChromium::needMoreUpdates()
-{
-    return false;
-}
-
-bool LayerChromium::needsContentsScale() const
-{
-    return false;
-}
-
-void LayerChromium::setDebugBorderColor(SkColor color)
-{
-    m_debugBorderColor = color;
-    setNeedsCommit();
-}
-
-void LayerChromium::setDebugBorderWidth(float width)
-{
-    m_debugBorderWidth = width;
-    setNeedsCommit();
-}
-
-void LayerChromium::setDebugName(const std::string& debugName)
-{
-    m_debugName = debugName;
-    setNeedsCommit();
-}
-
-void LayerChromium::setContentsScale(float contentsScale)
-{
-    if (!needsContentsScale() || m_contentsScale == contentsScale)
-        return;
-    m_contentsScale = contentsScale;
-
-    setNeedsDisplay();
-}
-
-void LayerChromium::setBoundsContainPageScale(bool boundsContainPageScale)
-{
-    for (size_t i = 0; i < m_children.size(); ++i)
-        m_children[i]->setBoundsContainPageScale(boundsContainPageScale);
-
-    if (boundsContainPageScale == m_boundsContainPageScale)
-        return;
-
-    m_boundsContainPageScale = boundsContainPageScale;
-    setNeedsDisplay();
-}
-
-void LayerChromium::createRenderSurface()
-{
-    ASSERT(!m_renderSurface);
-    m_renderSurface = make_scoped_ptr(new RenderSurfaceChromium(this));
-    setRenderTarget(this);
-}
-
-bool LayerChromium::descendantDrawsContent()
-{
-    for (size_t i = 0; i < m_children.size(); ++i) {
-        if (m_children[i]->drawsContent() || m_children[i]->descendantDrawsContent())
-            return true;
-    }
-    return false;
-}
-
-int LayerChromium::id() const
-{
-    return m_layerId;
-}
-
-float LayerChromium::opacity() const
-{
-    return m_opacity;
-}
-
-void LayerChromium::setOpacityFromAnimation(float opacity)
-{
-    // This is called due to an ongoing accelerated animation. Since this animation is
-    // also being run on the impl thread, there is no need to request a commit to push
-    // this value over, so set the value directly rather than calling setOpacity.
-    m_opacity = opacity;
-}
-
-const WebKit::WebTransformationMatrix& LayerChromium::transform() const
-{
-    return m_transform;
-}
-
-void LayerChromium::setTransformFromAnimation(const WebTransformationMatrix& transform)
-{
-    // This is called due to an ongoing accelerated animation. Since this animation is
-    // also being run on the impl thread, there is no need to request a commit to push
-    // this value over, so set this value directly rather than calling setTransform.
-    m_transform = transform;
-}
-
-bool LayerChromium::addAnimation(scoped_ptr <CCActiveAnimation> animation)
-{
-    // WebCore currently assumes that accelerated animations will start soon
-    // after the animation is added. However we cannot guarantee that if we do
-    // not have a layerTreeHost that will setNeedsCommit().
-    if (!m_layerTreeHost)
-        return false;
-
-    if (!CCSettings::acceleratedAnimationEnabled())
-        return false;
-
-    m_layerAnimationController->addAnimation(animation.Pass());
-    if (m_layerTreeHost) {
-        m_layerTreeHost->didAddAnimation();
-        setNeedsCommit();
-    }
-    return true;
-}
-
-void LayerChromium::pauseAnimation(int animationId, double timeOffset)
-{
-    m_layerAnimationController->pauseAnimation(animationId, timeOffset);
-    setNeedsCommit();
-}
-
-void LayerChromium::removeAnimation(int animationId)
-{
-    m_layerAnimationController->removeAnimation(animationId);
-    setNeedsCommit();
-}
-
-void LayerChromium::suspendAnimations(double monotonicTime)
-{
-    m_layerAnimationController->suspendAnimations(monotonicTime);
-    setNeedsCommit();
-}
-
-void LayerChromium::resumeAnimations(double monotonicTime)
-{
-    m_layerAnimationController->resumeAnimations(monotonicTime);
-    setNeedsCommit();
-}
-
-void LayerChromium::setLayerAnimationController(scoped_ptr<CCLayerAnimationController> layerAnimationController)
-{
-    m_layerAnimationController = layerAnimationController.Pass();
-    if (m_layerAnimationController) {
-        m_layerAnimationController->setClient(this);
-        m_layerAnimationController->setForceSync();
-    }
-    setNeedsCommit();
-}
-
-scoped_ptr<CCLayerAnimationController> LayerChromium::releaseLayerAnimationController()
-{
-    scoped_ptr<CCLayerAnimationController> toReturn = m_layerAnimationController.Pass();
-    m_layerAnimationController = CCLayerAnimationController::create(this);
-    return toReturn.Pass();
-}
-
-bool LayerChromium::hasActiveAnimation() const
-{
-    return m_layerAnimationController->hasActiveAnimation();
-}
-
-void LayerChromium::notifyAnimationStarted(const CCAnimationEvent& event, double wallClockTime)
-{
-    m_layerAnimationController->notifyAnimationStarted(event);
-    if (m_layerAnimationDelegate)
-        m_layerAnimationDelegate->notifyAnimationStarted(wallClockTime);
-}
-
-void LayerChromium::notifyAnimationFinished(double wallClockTime)
-{
-    if (m_layerAnimationDelegate)
-        m_layerAnimationDelegate->notifyAnimationFinished(wallClockTime);
-}
-
-Region LayerChromium::visibleContentOpaqueRegion() const
-{
-    if (contentsOpaque())
-        return visibleContentRect();
-    return Region();
-}
-
-ScrollbarLayerChromium* LayerChromium::toScrollbarLayerChromium()
-{
-    return 0;
-}
-
-void sortLayers(std::vector<scoped_refptr<LayerChromium> >::iterator, std::vector<scoped_refptr<LayerChromium> >::iterator, void*)
-{
-    // Currently we don't use z-order to decide what to paint, so there's no need to actually sort LayerChromiums.
-}
-
-}
-#endif // USE(ACCELERATED_COMPOSITING)