Remove unused was_fetched_via_proxy members

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 237 matching lines @@
   // to a named anchor.
   IPC_STRUCT_MEMBER(bool, was_within_same_page)
 
   // The status code of the HTTP request.
   IPC_STRUCT_MEMBER(int, http_status_code)
 
   // This flag is used to warn if the renderer is displaying an error page,
   // so that we can set the appropriate page type.
   IPC_STRUCT_MEMBER(bool, url_is_unreachable)
 
-  // True if the connection was proxied.  In this case, socket_address
-  // will represent the address of the proxy, rather than the remote host.
-  IPC_STRUCT_MEMBER(bool, was_fetched_via_proxy)
-
   // Serialized history item state to store in the navigation entry.
   IPC_STRUCT_MEMBER(content::PageState, page_state)
 
   // Original request's URL.
   IPC_STRUCT_MEMBER(GURL, original_request_url)
 
   // User agent override used to navigate.
   IPC_STRUCT_MEMBER(bool, is_overriding_user_agent)
 
   // Notifies the browser that for this navigation, the session history was
@@ skipping 1296 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.