Allow chrome to become the os default handler for arbitrary protocols on mac/win.

chrome/browser/shell_integration_linux.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/shell_integration.h"
 
 #include <fcntl.h>
 #include <glib.h>
 #include <stdlib.h>
 #include <sys/stat.h>
@@ skipping 236 matching lines @@
 
   std::vector<std::string> argv;
   argv.push_back("xdg-settings");
   argv.push_back("set");
   argv.push_back("default-web-browser");
   argv.push_back(GetDesktopName(env.get()));
   return LaunchXdgUtility(argv);
 }
 
 // static
-ShellIntegration::DefaultBrowserState ShellIntegration::IsDefaultBrowser() {
+bool ShellIntegration::SetAsDefaultProtocolClient(const std::string& protocol) {
+  // TODO(benwells): Implement this for Linux - crbug.com/83557
+  return false;
+}
+
+// static
+ShellIntegration::DefaultWebClientState ShellIntegration::IsDefaultBrowser() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   scoped_ptr<base::Environment> env(base::Environment::Create());
 
   std::vector<std::string> argv;
   argv.push_back("xdg-settings");
   argv.push_back("check");
   argv.push_back("default-web-browser");
   argv.push_back(GetDesktopName(env.get()));
 
   std::string reply;
   if (!base::GetAppOutput(CommandLine(argv), &reply)) {
     // xdg-settings failed: we can't determine or set the default browser.
-    return UNKNOWN_DEFAULT_BROWSER;
+    return UNKNOWN_DEFAULT_WEB_CLIENT;
   }
 
   // Allow any reply that starts with "yes".
-  return (reply.find("yes") == 0) ? IS_DEFAULT_BROWSER : NOT_DEFAULT_BROWSER;
+  return (reply.find("yes") == 0) ?
+      IS_DEFAULT_WEB_CLIENT : NOT_DEFAULT_WEB_CLIENT;
 }
 
 // static
+ShellIntegration::DefaultWebClientState
+ShellIntegration::IsDefaultProtocolClient(const std::string& protocol) {
+  // TODO(benwells): Implement this for Linux - crbug.com/83557
+  return UNKNOWN_DEFAULT_WEB_CLIENT;
+}
+
+// static
 bool ShellIntegration::IsFirefoxDefaultBrowser() {
   std::vector<std::string> argv;
   argv.push_back("xdg-settings");
   argv.push_back("get");
   argv.push_back("default-web-browser");
 
   std::string browser;
   // We don't care about the return value here.
   base::GetAppOutput(CommandLine(argv), &browser);
   return browser.find("irefox") != std::string::npos;
@@ skipping 200 matching lines @@
       shortcut_info.extension_id,
       shortcut_info.title,
       icon_name);
 
   if (shortcut_info.create_on_desktop)
     CreateShortcutOnDesktop(shortcut_filename, contents);
 
   if (shortcut_info.create_in_applications_menu)
     CreateShortcutInApplicationsMenu(shortcut_filename, contents);
 }