cc: Split out calcDrawEtc from drawLayers

cc/layer_impl.cc

Index: cc/layer_impl.cc
diff --git a/cc/layer_impl.cc b/cc/layer_impl.cc
index fa686134ca12feccaae18c19bffd704e2ea522d9..98092efd50d12bba6979ae41c573b8f0bdbf6948 100644
--- a/cc/layer_impl.cc
+++ b/cc/layer_impl.cc
@@ -69,6 +69,7 @@ void LayerImpl::addChild(scoped_ptr<LayerImpl> child)
     child->setParent(this);
     DCHECK_EQ(layerTreeHostImpl(), child->layerTreeHostImpl());
     m_children.append(child.Pass());
+    m_layerTreeHostImpl->setNeedsUpdateDrawProperties();
 }
 
 void LayerImpl::removeFromParent()
@@ -82,6 +83,7 @@ void LayerImpl::removeFromParent()
     for (size_t i = 0; i < parent->m_children.size(); ++i) {
         if (parent->m_children[i] == this) {
             parent->m_children.remove(i);
+            m_layerTreeHostImpl->setNeedsUpdateDrawProperties();
             return;
         }
     }
@@ -96,6 +98,7 @@ void LayerImpl::removeAllChildren()
 void LayerImpl::clearChildList()
 {
     m_children.clear();
+    m_layerTreeHostImpl->setNeedsUpdateDrawProperties();
 }
 
 void LayerImpl::createRenderSurface()
@@ -369,9 +372,21 @@ bool LayerImpl::layerSurfacePropertyChanged() const
     return false;
 }
 
-void LayerImpl::noteLayerPropertyChangedForSubtree()
+void LayerImpl::noteLayerSurfacePropertyChanged()
+{
+    m_layerSurfacePropertyChanged = true;
+    m_layerTreeHostImpl->setNeedsUpdateDrawProperties();
+}
+
+void LayerImpl::noteLayerPropertyChanged()
 {
     m_layerPropertyChanged = true;
+    m_layerTreeHostImpl->setNeedsUpdateDrawProperties();
+}
+
+void LayerImpl::noteLayerPropertyChangedForSubtree()
+{
+    noteLayerPropertyChanged();
     noteLayerPropertyChangedForDescendants();
 }
 
@@ -426,7 +441,7 @@ void LayerImpl::setBounds(const gfx::Size& bounds)
     if (masksToBounds())
         noteLayerPropertyChangedForSubtree();
     else
-        m_layerPropertyChanged = true;
+        noteLayerPropertyChanged();
 }
 
 void LayerImpl::setMaskLayer(scoped_ptr<LayerImpl> maskLayer)
@@ -463,7 +478,7 @@ void LayerImpl::setDrawsContent(bool drawsContent)
         return;
 
     m_drawsContent = drawsContent;
-    m_layerPropertyChanged = true;
+    noteLayerPropertyChanged();
 }
 
 void LayerImpl::setAnchorPoint(const gfx::PointF& anchorPoint)
@@ -490,7 +505,7 @@ void LayerImpl::setBackgroundColor(SkColor backgroundColor)
         return;
 
     m_backgroundColor = backgroundColor;
-    m_layerPropertyChanged = true;
+    noteLayerPropertyChanged();
 }
 
 void LayerImpl::setFilters(const WebKit::WebFilterOperations& filters)
@@ -509,7 +524,7 @@ void LayerImpl::setBackgroundFilters(const WebKit::WebFilterOperations& backgrou
         return;
 
     m_backgroundFilters = backgroundFilters;
-    m_layerPropertyChanged = true;
+    noteLayerPropertyChanged();
 }
 
 void LayerImpl::setFilter(const skia::RefPtr<SkImageFilter>& filter)
@@ -544,7 +559,8 @@ void LayerImpl::setOpacity(float opacity)
 {
     if (!m_layerAnimationController->setOpacity(opacity))
         return;
-    m_layerSurfacePropertyChanged = true;
+
+    noteLayerSurfacePropertyChanged();
 }
 
 float LayerImpl::opacity() const
@@ -589,7 +605,8 @@ void LayerImpl::setTransform(const gfx::Transform& transform)
 {
     if (!m_layerAnimationController->setTransform(transform))
         return;
-    m_layerSurfacePropertyChanged = true;
+
+    noteLayerSurfacePropertyChanged();
 }
 
 const gfx::Transform& LayerImpl::transform() const
@@ -608,7 +625,7 @@ void LayerImpl::setContentBounds(const gfx::Size& contentBounds)
         return;
 
     m_contentBounds = contentBounds;
-    m_layerPropertyChanged = true;
+    noteLayerPropertyChanged();
 }
 
 void LayerImpl::setContentsScale(float contentsScaleX, float contentsScaleY)
@@ -618,7 +635,7 @@ void LayerImpl::setContentsScale(float contentsScaleX, float contentsScaleY)
 
     m_contentsScaleX = contentsScaleX;
     m_contentsScaleY = contentsScaleY;
-    m_layerPropertyChanged = true;
+    noteLayerPropertyChanged();
 }
 
 void LayerImpl::setScrollOffset(gfx::Vector2d scrollOffset)