Change Lo-Fi bool to bitmask to support multiple Previews types

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 87 matching lines @@
 IPC_ENUM_TRAITS_MAX_VALUE(blink::WebFrameOwnerProperties::ScrollingMode,
                           blink::WebFrameOwnerProperties::ScrollingMode::Last)
 IPC_ENUM_TRAITS_MAX_VALUE(blink::WebPermissionType,
                           blink::WebPermissionTypeLast)
 IPC_ENUM_TRAITS_MAX_VALUE(content::StopFindAction,
                           content::STOP_FIND_ACTION_LAST)
 IPC_ENUM_TRAITS(blink::WebSandboxFlags)  // Bitmask.
 IPC_ENUM_TRAITS_MAX_VALUE(blink::WebTreeScopeType,
                           blink::WebTreeScopeType::Last)
 IPC_ENUM_TRAITS_MAX_VALUE(ui::MenuSourceType, ui::MENU_SOURCE_TYPE_LAST)
-IPC_ENUM_TRAITS_MIN_MAX_VALUE(content::LoFiState,
-                              content::LOFI_UNSPECIFIED,
-                              content::LOFI_ON)
 IPC_ENUM_TRAITS_MAX_VALUE(content::FileChooserParams::Mode,
                           content::FileChooserParams::Save)
 
 IPC_STRUCT_TRAITS_BEGIN(blink::WebFindOptions)
   IPC_STRUCT_TRAITS_MEMBER(forward)
   IPC_STRUCT_TRAITS_MEMBER(matchCase)
   IPC_STRUCT_TRAITS_MEMBER(findNext)
   IPC_STRUCT_TRAITS_MEMBER(force)
 IPC_STRUCT_TRAITS_END()
 
@@ skipping 209 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(referrer)
   IPC_STRUCT_TRAITS_MEMBER(transition)
   IPC_STRUCT_TRAITS_MEMBER(navigation_type)
   IPC_STRUCT_TRAITS_MEMBER(gesture)
   IPC_STRUCT_TRAITS_MEMBER(allow_download)
   IPC_STRUCT_TRAITS_MEMBER(should_replace_current_entry)
   IPC_STRUCT_TRAITS_MEMBER(ui_timestamp)
   IPC_STRUCT_TRAITS_MEMBER(report_type)
   IPC_STRUCT_TRAITS_MEMBER(base_url_for_data_url)
   IPC_STRUCT_TRAITS_MEMBER(history_url_for_data_url)
-  IPC_STRUCT_TRAITS_MEMBER(lofi_state)
+  IPC_STRUCT_TRAITS_MEMBER(previews_state)
   IPC_STRUCT_TRAITS_MEMBER(navigation_start)
   IPC_STRUCT_TRAITS_MEMBER(method)
   IPC_STRUCT_TRAITS_MEMBER(post_data)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::BeginNavigationParams)
   IPC_STRUCT_TRAITS_MEMBER(headers)
   IPC_STRUCT_TRAITS_MEMBER(load_flags)
   IPC_STRUCT_TRAITS_MEMBER(skip_service_worker)
   IPC_STRUCT_TRAITS_MEMBER(request_context_type)
@@ skipping 1162 matching lines @@
 // nearest find result in the sending frame.
 IPC_MESSAGE_ROUTED2(FrameHostMsg_GetNearestFindResult_Reply,
                     int /* nfr_request_id */,
                     float /* distance */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent FrameMsg, then ifdefs for platform specific FrameMsg, then
 // platform independent FrameHostMsg, then ifdefs for platform specific
 // FrameHostMsg.