Extract minimal RenderViewHost interface for embedders, leaving

chrome/browser/download/download_extension_api.cc

 // Copyright (c) 2012 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 "chrome/browser/download/download_extension_api.h"
 
 #include <algorithm>
 #include <cctype>
 #include <iterator>
 #include <set>
@@ skipping 401 matching lines @@
       EXTENSION_FUNCTION_VALIDATE(header->GetString(
             kHeaderValueKey, &value));
       if (!net::HttpUtil::IsSafeHeader(name)) {
         error_ = download_extension_errors::kGenericError;
         return false;
       }
     }
   }
   iodata_->rdh = ResourceDispatcherHost::Get();
   iodata_->resource_context = profile()->GetResourceContext();
-  iodata_->render_process_host_id = render_view_host()->process()->GetID();
-  iodata_->render_view_host_routing_id = render_view_host()->routing_id();
+  iodata_->render_process_host_id = render_view_host()->GetProcess()->GetID();
+  iodata_->render_view_host_routing_id = render_view_host()->GetRoutingID();
   return true;
 }
 
 bool DownloadsDownloadFunction::RunInternal() {
   VLOG(1) << __FUNCTION__ << " " << iodata_->url.spec();
   if (!BrowserThread::PostTask(BrowserThread::IO, FROM_HERE, base::Bind(
           &DownloadsDownloadFunction::BeginDownloadOnIOThread, this))) {
     error_ = download_extension_errors::kGenericError;
     return false;
   }
@@ skipping 600 matching lines @@
   ListValue args;
   args.Append(arg);
   std::string json_args;
   base::JSONWriter::Write(&args, false, &json_args);
   profile_->GetExtensionEventRouter()->DispatchEventToRenderers(
       event_name,
       json_args,
       profile_,
       GURL());
 }