Cleanup the remaining references to source_view_id

content/renderer/render_frame_proxy.cc

 // Copyright 2014 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.
 
 #include "content/renderer/render_frame_proxy.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 365 matching lines @@
   // Include the routing ID for the source frame (if one exists), which the
   // browser process will translate into the routing ID for the equivalent
   // frame in the target process.
   params.source_routing_id = MSG_ROUTING_NONE;
   if (source_frame) {
     RenderFrameImpl* source_render_frame =
         RenderFrameImpl::FromWebFrame(source_frame);
     if (source_render_frame)
       params.source_routing_id = source_render_frame->GetRoutingID();
   }
-  params.source_view_routing_id = MSG_ROUTING_NONE;
 
   Send(new FrameHostMsg_RouteMessageEvent(routing_id_, params));
 }
 
 void RenderFrameProxy::initializeChildFrame(
     const blink::WebRect& frame_rect,
     float scale_factor) {
   Send(new FrameHostMsg_InitializeChildFrame(
       routing_id_, frame_rect, scale_factor));
 }
@@ skipping 15 matching lines @@
 
 void RenderFrameProxy::forwardInputEvent(const blink::WebInputEvent* event) {
   Send(new FrameHostMsg_ForwardInputEvent(routing_id_, event));
 }
 
 void RenderFrameProxy::frameRectsChanged(const blink::WebRect& frame_rect) {
   Send(new FrameHostMsg_FrameRectChanged(routing_id_, frame_rect));
 }
 
 }  // namespace