Calls to rph updating existing handlers are ignored.

chrome/browser/ui/browser.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 "chrome/browser/ui/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 2482 matching lines @@
   ChildProcessSecurityPolicy* policy =
       ChildProcessSecurityPolicy::GetInstance();
   if (policy->IsPseudoScheme(protocol) || policy->IsDisabledScheme(protocol))
     return;
 
   ProtocolHandler handler =
       ProtocolHandler::CreateProtocolHandler(protocol, url, title);
 
   ProtocolHandlerRegistry* registry =
       tcw->profile()->GetProtocolHandlerRegistry();
-  if (!registry->enabled() || registry->HasRegisteredEquivalent(handler) ||
-      registry->HasIgnoredEquivalent(handler))
-    return;
 
-  if (!handler.IsEmpty() &&
-      registry->CanSchemeBeOverridden(handler.protocol())) {
-    // We don't need to show an infobar if we can silently update the handler
-    if (registry->AttemptReplace(handler))
-      return;
+  if (!registry->SilentlyHandleRegisterHandlerRequest(handler)) {
     UserMetrics::RecordAction(
         UserMetricsAction("RegisterProtocolHandler.InfoBar_Shown"));
     InfoBarTabHelper* infobar_helper = tcw->infobar_tab_helper();
     infobar_helper->AddInfoBar(
         new RegisterProtocolHandlerInfoBarDelegate(infobar_helper,
                                                    registry,
                                                    handler));
   }
 }
 
@@ skipping 3012 matching lines @@
 }
 
 void Browser::UpdateFullscreenExitBubbleContent() {
   GURL url;
   if (fullscreened_tab_)
     url = fullscreened_tab_->tab_contents()->GetURL();
 
   window_->UpdateFullscreenExitBubbleContent(
       url, GetFullscreenExitBubbleType());
 }