Make more stuff private in renderer

core/cross/renderer.cc

Index: core/cross/renderer.cc
===================================================================
--- core/cross/renderer.cc	(revision 25781)
+++ core/cross/renderer.cc	(working copy)
@@ -99,12 +99,12 @@
 }
 
 Renderer::Renderer(ServiceLocator* service_locator)
-    : current_render_surface_(NULL),
+    : service_locator_(service_locator),
+      service_(service_locator, this),
+      features_(service_locator),
+      current_render_surface_(NULL),
       current_depth_surface_(NULL),
       current_render_surface_is_back_buffer_(true),
-      service_locator_(service_locator),
-      service_(service_locator, this),
-      features_(service_locator),
       viewport_(0.0f, 0.0f, 1.0f, 1.0f),
       depth_range_(0.0f, 1.0f),
       write_mask_(0xf),
@@ -308,6 +308,9 @@
   if (start_depth_ == 0) {
     ApplyDirtyStates();
     PlatformSpecificFinishRendering();
+    // Don't hold pointers to these when we are finished rendering.
+    current_render_surface_ = NULL;
+    current_depth_surface_ = NULL;
     rendering_ = false;
   }
 }