Don't try to set the default OS level browser or protocol client on ChromeOS

chrome/browser/shell_integration_linux.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_linux.h"
 
 #include <fcntl.h>
 #include <glib.h>
 #include <stdlib.h>
 #include <sys/stat.h>
@@ skipping 261 matching lines @@
 // When calling this script we first try to use the script on PATH. If that
 // fails we then try to use the script that we have included. This gives
 // scripts on the system priority over ours, as distribution vendors may have
 // tweaked the script, but still allows our copy to be used if the script on the
 // system fails, as the system copy may be missing capabilities of the Chrome
 // copy.
 
 // If |protocol| is empty this function sets Chrome as the default browser,
 // otherwise it sets Chrome as the default handler application for |protocol|.
 bool SetDefaultWebClient(const std::string& protocol) {
+#if defined(OS_CHROMEOS)
+  return true;
+#else
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   scoped_ptr<base::Environment> env(base::Environment::Create());
 
   std::vector<std::string> argv;
   argv.push_back(kXdgSettings);
   argv.push_back("set");
   if (protocol.empty()) {
     argv.push_back(kXdgSettingsDefaultBrowser);
   } else {
     argv.push_back(kXdgSettingsDefaultSchemeHandler);
     argv.push_back(protocol);
   }
   argv.push_back(ShellIntegrationLinux::GetDesktopName(env.get()));
 
   int exit_code;
   bool ran_ok = LaunchXdgUtility(argv, &exit_code);
   if (ran_ok && exit_code == EXIT_XDG_SETTINGS_SYNTAX_ERROR) {
     if (GetChromeVersionOfScript(kXdgSettings, &argv[0])) {
       ran_ok = LaunchXdgUtility(argv, &exit_code);
     }
   }
 
   return ran_ok && exit_code == EXIT_SUCCESS;
+#endif
 }
 
 // If |protocol| is empty this function checks if Chrome is the default browser,
 // otherwise it checks if Chrome is the default handler application for
 // |protocol|.
 ShellIntegration::DefaultWebClientState GetIsDefaultWebClient(
     const std::string& protocol) {
+#if defined(OS_CHROMEOS)
+  return ShellIntegration::IS_DEFAULT_WEB_CLIENT;
+#else
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   scoped_ptr<base::Environment> env(base::Environment::Create());
 
   std::vector<std::string> argv;
   argv.push_back(kXdgSettings);
   argv.push_back("check");
   if (protocol.empty()) {
     argv.push_back(kXdgSettingsDefaultBrowser);
   } else {
@@ skipping 14 matching lines @@
   }
 
   if (!ran_ok || success_code != EXIT_SUCCESS) {
     // xdg-settings failed: we can't determine or set the default browser.
     return ShellIntegration::UNKNOWN_DEFAULT_WEB_CLIENT;
   }
 
   // Allow any reply that starts with "yes".
   return (reply.find("yes") == 0) ? ShellIntegration::IS_DEFAULT_WEB_CLIENT :
                                     ShellIntegration::NOT_DEFAULT_WEB_CLIENT;
+#endif
 }
 
 } // namespace
 
 // static
 bool ShellIntegration::CanSetAsDefaultBrowser() {
   return true;
 }
 
 // static
@@ skipping 273 matching lines @@
     success = CreateShortcutOnDesktop(shortcut_filename, contents);
 
   if (shortcut_info.create_in_applications_menu)
     success = CreateShortcutInApplicationsMenu(shortcut_filename, contents) &&
               success;
 
   return success;
 }
 
 }  // namespace ShellIntegrationLinux