Consistently use LoFi for an entire page

content/common/frame_messages.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "content/common/content_export.h"
@@ skipping 279 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(page_state)
   IPC_STRUCT_TRAITS_MEMBER(page_id)
   IPC_STRUCT_TRAITS_MEMBER(nav_entry_id)
   IPC_STRUCT_TRAITS_MEMBER(is_same_document_history_load)
   IPC_STRUCT_TRAITS_MEMBER(has_committed_real_load)
   IPC_STRUCT_TRAITS_MEMBER(intended_as_new_entry)
   IPC_STRUCT_TRAITS_MEMBER(pending_history_list_offset)
   IPC_STRUCT_TRAITS_MEMBER(current_history_list_offset)
   IPC_STRUCT_TRAITS_MEMBER(current_history_list_length)
   IPC_STRUCT_TRAITS_MEMBER(should_clear_history_list)
+  IPC_STRUCT_TRAITS_MEMBER(lofi_state)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::FrameReplicationState)
   IPC_STRUCT_TRAITS_MEMBER(origin)
   IPC_STRUCT_TRAITS_MEMBER(sandbox_flags)
   IPC_STRUCT_TRAITS_MEMBER(name)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_BEGIN(FrameMsg_NewFrame_WidgetParams)
   // Gives the routing ID for the RenderWidget that will be attached to the
@@ skipping 713 matching lines @@
                     FrameMsg_PostMessage_Params)
 
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 
 // Message to show/hide a popup menu using native controls.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_ShowPopup,
                     FrameHostMsg_ShowPopup_Params)
 IPC_MESSAGE_ROUTED0(FrameHostMsg_HidePopup)
 
 #endif