Simplify the user agent overriding code, in preparation for moving it out of src/webkit.

content/public/common/content_client.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 "content/public/common/content_client.h"
 
 #include "base/logging.h"
 #include "base/strings/string_piece.h"
 #include "ui/gfx/image/image.h"
 #include "webkit/common/user_agent/user_agent.h"
@@ skipping 22 matching lines @@
     return rv;
   }
 };
 
 void SetContentClient(ContentClient* client) {
   g_client = client;
 
   // Set the default user agent as provided by the client. We need to make
   // sure this is done before webkit_glue::GetUserAgent() is called (so that
   // the UA doesn't change).
-  if (client) {
-    webkit_glue::SetUserAgent(client->GetUserAgent(), false);
-  }
+  if (client)
+    webkit_glue::SetUserAgent(client->GetUserAgent());
 }
 
 ContentClient* GetContentClient() {
   return g_client;
 }
 
 ContentBrowserClient* SetBrowserClientForTesting(ContentBrowserClient* b) {
   return InternalTestInitializer::SetBrowser(b);
 }
 
@@ skipping 64 matching lines @@
     int* sandbox_profile_resource_id) const {
   return false;
 }
 
 std::string ContentClient::GetCarbonInterposePath() const {
   return std::string();
 }
 #endif
 
 }  // namespace content