[SPv2] Use foreign layer support to enable composited video.

third_party/WebKit/Source/platform/testing/WebLayerTreeViewImplForTesting.cpp

Index: third_party/WebKit/Source/platform/testing/WebLayerTreeViewImplForTesting.cpp
diff --git a/third_party/WebKit/Source/platform/testing/WebLayerTreeViewImplForTesting.cpp b/third_party/WebKit/Source/platform/testing/WebLayerTreeViewImplForTesting.cpp
index b840999ca895ac97e1c2c09d3c82c9db17c5094e..287d11be6d9178d5f7f7111d493b59d82be353f9 100644
--- a/third_party/WebKit/Source/platform/testing/WebLayerTreeViewImplForTesting.cpp
+++ b/third_party/WebKit/Source/platform/testing/WebLayerTreeViewImplForTesting.cpp
@@ -22,6 +22,18 @@ WebLayerTreeViewImplForTesting::WebLayerTreeViewImplForTesting()
 {
 }
 
+static cc::LayerTreeSettings settingsForLayerListPolicy(WebLayerTreeViewImplForTesting::LayerListPolicy policy)
+{
+    cc::LayerTreeSettings settings = WebLayerTreeViewImplForTesting::defaultLayerTreeSettings();
+    settings.use_layer_lists = policy == WebLayerTreeViewImplForTesting::UseLayerLists;
+    return settings;
+}
+
+WebLayerTreeViewImplForTesting::WebLayerTreeViewImplForTesting(LayerListPolicy policy)
+    : WebLayerTreeViewImplForTesting(settingsForLayerListPolicy(policy))
+{
+}
+
 WebLayerTreeViewImplForTesting::WebLayerTreeViewImplForTesting(const cc::LayerTreeSettings& settings)
 {
     cc::LayerTreeHost::InitParams params;
@@ -48,6 +60,11 @@ cc::LayerTreeSettings WebLayerTreeViewImplForTesting::defaultLayerTreeSettings()
     return settings;
 }
 
+bool WebLayerTreeViewImplForTesting::hasLayer(const WebLayer& layer)
+{
+    return layer.ccLayer()->layer_tree_host() == m_layerTreeHost.get();
+}
+
 void WebLayerTreeViewImplForTesting::setRootLayer(const blink::WebLayer& root)
 {
     m_layerTreeHost->SetRootLayer(static_cast<const cc_blink::WebLayerImpl*>(&root)->layer());