Adds navigator.registerProtocolHandler.

chrome/browser/tab_contents/tab_contents.cc

Index: chrome/browser/tab_contents/tab_contents.cc
diff --git a/chrome/browser/tab_contents/tab_contents.cc b/chrome/browser/tab_contents/tab_contents.cc
index 2f946be16bb945a3a29a5caff2461bab3e7b1847..62c006bf02dc5a3cbd7ed7b153dd2aa3c0da4c90 100644
--- a/chrome/browser/tab_contents/tab_contents.cc
+++ b/chrome/browser/tab_contents/tab_contents.cc
@@ -22,6 +22,8 @@
 #include "chrome/browser/child_process_security_policy.h"
 #include "chrome/browser/content_settings/content_settings_details.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
+#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
+#include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/desktop_notification_handler.h"
@@ -2620,6 +2622,32 @@ void TabContents::ProcessExternalHostMessage(const std::string& message,
     delegate()->ForwardMessageToExternalHost(message, origin, target);
 }
 
+void TabContents::RegisterProtocolHandler(const std::string& protocol,
+                                          const GURL& url,
+                                          const string16& title) {
+  ProtocolHandlerRegistry* registry = profile()->GetProtocolHandlerRegistry();
+  if (!registry->CanSchemeBeOverridden(protocol)) {
+    return;
+  }
+
+  ProtocolHandler* handler = ProtocolHandler::CreateProtocolHandler(protocol,
+                                                                    url, title);
+  if (handler == NULL) {
+    return;
+  }
+
+  if (registry->IsAlreadyRegistered(handler)) {
+      AddInfoBar(new SimpleAlertInfoBarDelegate(this, NULL,
+          l10n_util::GetStringFUTF16(
+              IDS_REGISTER_PROTOCOL_HANDLER_ALREADY_REGISTERED,
+              handler->title(), UTF8ToUTF16(handler->protocol())), true));
+    return;
+  }
+
+  AddInfoBar(new RegisterProtocolHandlerInfoBarDelegate(this, registry,
+        handler));
+}
+
 void TabContents::RunJavaScriptMessage(
     const std::wstring& message,
     const std::wstring& default_prompt,