Simplify the text in the external protocol confirmation dialog.

chrome/browser/shell_integration_win.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/shell_integration_win.h"
 
 #include <windows.h>
 #include <shlwapi.h>
 #include <shobjidl.h>
 #include <propkey.h>  // Needs to come after shobjidl.h.
@@ skipping 187 matching lines @@
   }
   return base::string16(out_buffer);
 }
 
 base::string16 GetAppForProtocolUsingRegistry(const GURL& url) {
   const base::string16 cmd_key_path =
       base::ASCIIToUTF16(url.scheme() + "\\shell\\open\\command");
   base::win::RegKey cmd_key(HKEY_CLASSES_ROOT,
                             cmd_key_path.c_str(),
                             KEY_READ);
-  base::string16 application_to_launch;
-  if (cmd_key.ReadValue(NULL, &application_to_launch) == ERROR_SUCCESS) {
-    const base::string16 url_spec =
-        base::ASCIIToUTF16(url.possibly_invalid_spec());
-    base::ReplaceSubstringsAfterOffset(&application_to_launch,
-                                       0,
-                                       L"%1",
-                                       url_spec);
-    return application_to_launch;
+  base::string16 command_to_launch;
+  if (cmd_key.ReadValue(NULL, &command_to_launch) == ERROR_SUCCESS) {
+    // Parse the command line in the registry, and return the basename of the
+    // program path.
+    base::CommandLine command_line(
+        base::CommandLine::FromString(command_to_launch));
+    return base::WideToUTF16(command_line.GetProgram().BaseName().value());
   }
   return base::string16();
 }
 
 DefaultWebClientState GetDefaultWebClientStateFromShellUtilDefaultState(
     ShellUtil::DefaultState default_state) {
   switch (default_state) {
     case ShellUtil::NOT_DEFAULT:
       return DefaultWebClientState::NOT_DEFAULT;
     case ShellUtil::IS_DEFAULT:
@@ skipping 626 matching lines @@
     if (base::PathExists(shortcut))
       return shortcut;
   }
 
   return base::FilePath();
 }
 
 }  // namespace win
 
 }  // namespace shell_integration