Handle ui::Layer's visibility using cc::Layer's m_isDrawable flag

cc/layer_impl.cc

 // Copyright 2011 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 "cc/layer_impl.h"
 
 #include "base/debug/trace_event.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "cc/animation_registrar.h"
@@ skipping 30 matching lines @@
     , m_layerPropertyChanged(false)
     , m_layerSurfacePropertyChanged(false)
     , m_masksToBounds(false)
     , m_contentsOpaque(false)
     , m_opacity(1.0)
     , m_preserves3D(false)
     , m_useParentBackfaceVisibility(false)
     , m_drawCheckerboardForMissingTiles(false)
     , m_drawsContent(false)
     , m_forceRenderSurface(false)
+    , m_visible(true)
     , m_isContainerForFixedPositionLayers(false)
     , m_fixedToContainerLayer(false)
     , m_drawDepth(0)
 #ifndef NDEBUG
     , m_betweenWillDrawAndDidDraw(false)
 #endif
     , m_horizontalScrollbarLayer(0)
     , m_verticalScrollbarLayer(0)
 {
     DCHECK(m_layerId > 0);
@@ skipping 261 matching lines @@
     layer->setAnchorPointZ(m_anchorPointZ);
     layer->setBackgroundColor(m_backgroundColor);
     layer->setBounds(m_bounds);
     layer->setContentBounds(contentBounds());
     layer->setContentsScale(contentsScaleX(), contentsScaleY());
     layer->setDebugName(m_debugName);
     layer->setDoubleSided(m_doubleSided);
     layer->setDrawCheckerboardForMissingTiles(m_drawCheckerboardForMissingTiles);
     layer->setForceRenderSurface(m_forceRenderSurface);
     layer->setDrawsContent(drawsContent());
+    layer->setVisible(visible());
     layer->setFilters(filters());
     layer->setFilter(filter());
     layer->setBackgroundFilters(backgroundFilters());
     layer->setMasksToBounds(m_masksToBounds);
     layer->setShouldScrollOnMainThread(m_shouldScrollOnMainThread);
     layer->setHaveWheelEventHandlers(m_haveWheelEventHandlers);
     layer->setNonFastScrollableRegion(m_nonFastScrollableRegion);
     layer->setTouchEventHandlerRegion(m_touchEventHandlerRegion);
     layer->setContentsOpaque(m_contentsOpaque);
     if (!opacityIsAnimating())
@@ skipping 295 matching lines @@
 
 void LayerImpl::setDrawsContent(bool drawsContent)
 {
     if (m_drawsContent == drawsContent)
         return;
 
     m_drawsContent = drawsContent;
     noteLayerPropertyChanged();
 }
 
+void LayerImpl::setVisible(bool visible)
+{
+    if (m_visible == visible)
+        return;
+
+    m_visible = visible;
+    noteLayerSurfacePropertyChanged();
+}
+
 void LayerImpl::setAnchorPoint(const gfx::PointF& anchorPoint)
 {
     if (m_anchorPoint == anchorPoint)
         return;
 
     m_anchorPoint = anchorPoint;
     noteLayerPropertyChangedForSubtree();
 }
 
 void LayerImpl::setAnchorPointZ(float anchorPointZ)
@@ skipping 300 matching lines @@
 }
 
 void LayerImpl::setVerticalScrollbarLayer(ScrollbarLayerImpl* scrollbarLayer)
 {
     m_verticalScrollbarLayer = scrollbarLayer;
     if (m_verticalScrollbarLayer)
         m_verticalScrollbarLayer->setScrollLayerId(id());
 }
 
 }  // namespace cc