Add cc::RendererSettings for use in with cc::Display

cc/output/software_renderer.cc

Index: cc/output/software_renderer.cc
diff --git a/cc/output/software_renderer.cc b/cc/output/software_renderer.cc
index acc897f043dae3e1a7f58bf242dfdb33c0120ba8..99c74786541e8c75039007602ad7b91d57b48a95 100644
--- a/cc/output/software_renderer.cc
+++ b/cc/output/software_renderer.cc
@@ -63,7 +63,7 @@ static SkShader::TileMode WrapModeToTileMode(GLint wrap_mode) {
 
 scoped_ptr<SoftwareRenderer> SoftwareRenderer::Create(
     RendererClient* client,
-    const LayerTreeSettings* settings,
+    const RendererSettings* settings,
     OutputSurface* output_surface,
     ResourceProvider* resource_provider) {
   return make_scoped_ptr(new SoftwareRenderer(
@@ -71,7 +71,7 @@ scoped_ptr<SoftwareRenderer> SoftwareRenderer::Create(
 }
 
 SoftwareRenderer::SoftwareRenderer(RendererClient* client,
-                                   const LayerTreeSettings* settings,
+                                   const RendererSettings* settings,
                                    OutputSurface* output_surface,
                                    ResourceProvider* resource_provider)
     : DirectRenderer(client, settings, output_surface, resource_provider),