Add CCDelegatingRenderer, and corresponding IPCs

ui/compositor/layer.cc

Index: ui/compositor/layer.cc
diff --git a/ui/compositor/layer.cc b/ui/compositor/layer.cc
index bbca75ab9628ca599cd35c36740f9d8af19a39bb..b5ac812ec96238bada7baa17aedb1c91ce3708b6 100644
--- a/ui/compositor/layer.cc
+++ b/ui/compositor/layer.cc
@@ -423,6 +423,50 @@ void Layer::SetExternalTexture(Texture* texture) {
   RecomputeDrawsContentAndUVRect();
 }
 
+void Layer::SetCompositorFrame(const WebKit::WebCompositorFrame& frame) {
+  DCHECK_EQ(type_, LAYER_TEXTURED);
+  layer_updated_externally_ = false;
+  if (!delegated_renderer_layer_.get()) {
+    // Switch to a different type of layer.
+    web_layer_->removeAllChildren();
+    scoped_ptr<WebKit::WebContentLayer> old_content_layer(
+        content_layer_.release());
+    scoped_ptr<WebKit::WebSolidColorLayer> old_solid_layer(
+        solid_color_layer_.release());
+    scoped_ptr<WebKit::WebExternalTextureLayer> old_texture_layer(
+        texture_layer_.release());
+    WebKit::WebLayer* new_layer = NULL;
+    WebKit::WebCompositorSupport* compositor_support =
+        WebKit::Platform::current()->compositorSupport();
+    delegated_renderer_layer_.reset(
+        compositor_support->createDelegatedRendererLayer());
+    new_layer = delegated_renderer_layer_->layer();
+    if (parent_) {
+      DCHECK(parent_->web_layer_);
+      parent_->web_layer_->replaceChild(web_layer_, new_layer);
+    }
+    web_layer_= new_layer;
+    for (size_t i = 0; i < children_.size(); ++i) {
+      DCHECK(children_[i]->web_layer_);
+      web_layer_->addChild(children_[i]->web_layer_);
+    }
+    web_layer_->setAnchorPoint(WebKit::WebFloatPoint(0.f, 0.f));
+    web_layer_->setOpaque(fills_bounds_opaquely_);
+    web_layer_->setOpacity(visible_ ? opacity_ : 0.f);
+    web_layer_->setDebugBorderWidth(show_debug_borders_ ? 2 : 0);
+    web_layer_->setForceRenderSurface(force_render_surface_);
+    RecomputeTransform();
+    RecomputeDebugBorderColor();
+  }
+  delegated_renderer_layer_->setFrameData(frame);
+  RecomputeDrawsContentAndUVRect();
+}
+
+void Layer::GetRecycledResources(cc::TransferableResourceList* list) {
+  if (delegated_renderer_layer_.get())
+    delegated_renderer_layer_->getRecycledResources(list);
+}
+
 void Layer::SetColor(SkColor color) {
   DCHECK_EQ(type_, LAYER_SOLID_COLOR);
   // WebColor is equivalent to SkColor, per WebColor.h.