Make delegate_execute GetLaunchMode() check for default browser.

chrome/installer/util/shell_util.h

 // 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.
 //
 // This file declares methods that are useful for integrating Chrome in
 // Windows shell. These methods are all static and currently part of
 // ShellUtil class.
 
 #ifndef CHROME_INSTALLER_UTIL_SHELL_UTIL_H_
 #define CHROME_INSTALLER_UTIL_SHELL_UTIL_H_
@@ skipping 394 matching lines @@
       const std::vector<base::string16>& components);
 
   // Returns true if Chrome can make itself the default browser without relying
   // on the Windows shell to prompt the user. This is the case for versions of
   // Windows prior to Windows 8.
   static bool CanMakeChromeDefaultUnattended();
 
   // Returns the DefaultState of Chrome for HTTP and HTTPS.
   static DefaultState GetChromeDefaultState();
 
+  // Returns the DefaultState of the Chrome instance with the specified path
+  // for HTTP and HTTPs.
+  static DefaultState GetChromeDefaultStateFromPath(
+      const base::FilePath& chrome_exe);
+
   // Returns the DefaultState of Chrome for |protocol|.
   static DefaultState GetChromeDefaultProtocolClientState(
       const base::string16& protocol);
 
   // Make Chrome the default browser. This function works by going through
   // the url protocols and file associations that are related to general
   // browsing, e.g. http, https, .html etc., and requesting to become the
   // default handler for each. If any of these fails the operation will return
   // false to indicate failure, which is consistent with the return value of
   // ShellIntegration::GetDefaultBrowser.
@@ skipping 169 matching lines @@
   // required by the base32 standard for inputs that aren't a multiple of 5
   // bytes.
   static base::string16 ByteArrayToBase32(const uint8* bytes, size_t size);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellUtil);
 };
 
 
 #endif  // CHROME_INSTALLER_UTIL_SHELL_UTIL_H_