Clean up paint invalidation container logic for RenderText.

Source/core/rendering/RenderObject.cpp

Index: Source/core/rendering/RenderObject.cpp
diff --git a/Source/core/rendering/RenderObject.cpp b/Source/core/rendering/RenderObject.cpp
index 2772d053cb54e5454e14fc5d323de93a3ff39d7f..c6bca6cda6254025dc87dbc448d53b8694219ed8 100644
--- a/Source/core/rendering/RenderObject.cpp
+++ b/Source/core/rendering/RenderObject.cpp
@@ -562,9 +562,8 @@ RenderLayer* RenderObject::enclosingLayer() const
         if (current->hasLayer())
             return toRenderLayerModelObject(current)->layer();
     }
-    // FIXME: We should remove the one caller that triggers this case and make
-    // this function return a reference.
-    ASSERT(!m_parent && !isRenderView());
+    // FIXME: we should get rid of detached render subtrees, at which point this code should
+    // not be reached.

[dsinclair, 2014/09/05 19:35:10]

Is there a crbug that can be referenced?

     return 0;
 }