Revert of Pass Surface ID namespace to renderer compositors.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index db48f70a37889ba162941cb505d626f707faa043..94d484f72ed7a922a2fe850a9a5bd2611ff70e1c 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -749,7 +749,6 @@
     IPC_MESSAGE_HANDLER(ViewMsg_SetTextDirection, OnSetTextDirection)
     IPC_MESSAGE_HANDLER(ViewMsg_Move_ACK, OnRequestMoveAck)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateScreenRects, OnUpdateScreenRects)
-    IPC_MESSAGE_HANDLER(ViewMsg_SetSurfaceIdNamespace, OnSetSurfaceIdNamespace)
 #if defined(OS_ANDROID)
     IPC_MESSAGE_HANDLER(ViewMsg_ShowImeIfNeeded, OnShowImeIfNeeded)
     IPC_MESSAGE_HANDLER(ViewMsg_ImeEventAck, OnImeEventAck)
@@ -1748,11 +1747,6 @@
     window_screen_rect_ = window_screen_rect;
   }
   Send(new ViewHostMsg_UpdateScreenRects_ACK(routing_id()));
-}
-
-void RenderWidget::OnSetSurfaceIdNamespace(uint32_t surface_id_namespace) {
-  if (compositor_)
-    compositor_->SetSurfaceIdNamespace(surface_id_namespace);
 }
 
 void RenderWidget::showImeIfNeeded() {