cc: Remove cc::settings, move them to LayerTreeSettings.

ppapi/shared_impl/ppapi_preferences.cc

Index: ppapi/shared_impl/ppapi_preferences.cc
diff --git a/ppapi/shared_impl/ppapi_preferences.cc b/ppapi/shared_impl/ppapi_preferences.cc
index c7bb0cbda88065a57dc027289f1fe18f841a3f49..3a2bffae2a9e506aa4a8bbd4ff5f85deb2633db1 100644
--- a/ppapi/shared_impl/ppapi_preferences.cc
+++ b/ppapi/shared_impl/ppapi_preferences.cc
@@ -25,9 +25,10 @@ Preferences::Preferences(const webkit_glue::WebPreferences& prefs)
       is_3d_supported(prefs.flash_3d_enabled),
       is_stage3d_supported(prefs.flash_stage3d_enabled),
       // This determines both if webgl is supported (experimental_webgl_enabled)
-      // and if it runs in hardware (accelerated_plugins_enabled)
+      // and if it runs in hardware
+      // (accelerated_compositing_for_plugins_enabled)
       is_webgl_supported(prefs.experimental_webgl_enabled &&
-                         prefs.accelerated_plugins_enabled) {
+                         prefs.accelerated_compositing_for_plugins_enabled) {
 }
 
 Preferences::~Preferences() {