Move second internal recursion to a precomputation in layer_tree_host_common.cc

cc/layer_impl.cc

Index: cc/layer_impl.cc
diff --git a/cc/layer_impl.cc b/cc/layer_impl.cc
index 521c5bca21192b7ec63a9eef95994e66c2147bf4..06a2c820e856819f3fde1c7c90ddaa71a68d3f23 100644
--- a/cc/layer_impl.cc
+++ b/cc/layer_impl.cc
@@ -108,19 +108,6 @@ void LayerImpl::createRenderSurface()
     m_drawProperties.render_target = this;
 }
 
-int LayerImpl::descendantsDrawContent()
-{
-    int result = 0;
-    for (size_t i = 0; i < m_children.size(); ++i) {
-        if (m_children[i]->drawsContent())
-            ++result;
-        result += m_children[i]->descendantsDrawContent();
-        if (result > 1)
-            return result;
-    }
-    return result;
-}
-
 LayerTreeHostImpl* LayerImpl::layerTreeHostImpl() const {
     return m_layerTreeImpl->layer_tree_host_impl();
 }
@@ -192,6 +179,11 @@ void LayerImpl::appendDebugBorderQuad(QuadSink& quadList, const SharedQuadState*
     quadList.append(debugBorderQuad.PassAs<DrawQuad>(), appendQuadsData);
 }
 
+bool LayerImpl::hasDelegatedContent() const
+{
+    return false;
+}
+
 bool LayerImpl::hasContributingDelegatedRenderPasses() const
 {
     return false;