cc: Add some impl-side painting stub classes and APIs

cc/picture_layer_impl.cc

Index: cc/picture_layer_impl.cc
diff --git a/cc/renderer.cc b/cc/picture_layer_impl.cc
similarity index 57%
copy from cc/renderer.cc
copy to cc/picture_layer_impl.cc
index 2dac708d8fd170d3ad52436ae591a895e193656a..0da0d204339553cae09819aec57a508dc31ed294 100644
--- a/cc/renderer.cc
+++ b/cc/picture_layer_impl.cc
@@ -4,18 +4,15 @@
 
 #include "config.h"
 
-#include "cc/renderer.h"
+#include "cc/picture_layer_impl.h"
 
 namespace cc {
 
-bool Renderer::haveCachedResourcesForRenderPassId(RenderPass::Id) const
-{
-    return false;
+PictureLayerImpl::PictureLayerImpl(int id) :
+    LayerImpl(id) {
 }
 
-bool Renderer::isContextLost()
-{
-    return false;
+PictureLayerImpl::~PictureLayerImpl() {
 }
 
 }  // namespace cc