Backout changeset f09fdc691c66 (bug 539356) because of performance and correctness regressions

view/src/Makefile.in

@@ -17,8 +17,6 @@ MODULE_NAME	= nsViewModule
 GRE_MODULE	= 1
 LIBXUL_LIBRARY	= 1
 
-DEFINES += -D_IMPL_NS_LAYOUT
-
 CPPSRCS		= \
 		nsView.cpp \
 		nsViewManager.cpp \

view/src/nsViewManager.cpp

@@ -1308,7 +1308,6 @@ nsViewManager::ProcessPendingUpdates()
     return;
   }
 
-  mPresShell->GetPresContext()->RefreshDriver()->RevokeViewManagerFlush();
   ProcessPendingUpdatesForView(mRootView, true);
 }