Add a content::GetUserAgent() to wrap webkit_glue::GetUserAgent()

content/common/content_client.cc

 // Copyright (c) 2011 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/common/content_client.h"
 
+#include "base/logging.h"
 #include "base/string_piece.h"
 #include "webkit/glue/webkit_glue.h"
 
 namespace content {
 
 static ContentClient* g_client;
 
 void SetContentClient(ContentClient* client) {
   g_client = client;
 
   // TODO(dpranke): Doing real work (calling webkit_glue::SetUserAgent)
   // inside what looks like a function that initializes a global is a
   // bit odd, but we need to make sure this is done before
   // webkit_glue::GetUserAgent() is called (so that the UA doesn't change).
   //
   // It would be cleaner if we could rename this to something like a
   // content::Initialize(). Maybe we can merge this into ContentMain() somehow?
   if (client) {
     bool custom = false;
     std::string ua = client->GetUserAgent(&custom);
     webkit_glue::SetUserAgent(ua, custom);
   }
 }
 
 ContentClient* GetContentClient() {
   return g_client;
 }
 
+const std::string& GetUserAgent(const GURL& url) {
+  DCHECK(g_client);
+  return webkit_glue::GetUserAgent(url);
+}
+
 ContentClient::ContentClient()
     : browser_(NULL), plugin_(NULL), renderer_(NULL), utility_(NULL) {
 }
 
 ContentClient::~ContentClient() {
 }
 
 }  // namespace content