Linux: try libgio-2.0.so.0 first when trying to use gsettings for proxy settings.

net/proxy/proxy_config_service_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 "net/proxy/proxy_config_service_linux.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #if defined(USE_GCONF)
 #include <gconf/gconf-client.h>
@@ skipping 826 matching lines @@
   // support linking directly via gyp flags though.) Additionally, even when
   // they are present, we do two additional checks to make sure we should use
   // them and not gconf. First, we attempt to load the schema for proxy
   // settings. Second, we check for the program that was used in older
   // versions of GNOME to configure proxy settings, and return false if it
   // exists. Some distributions (e.g. Ubuntu 11.04) have the API and schema
   // but don't use gsettings for proxy settings, but they do have the old
   // binary, so we detect these systems that way.
 
 #ifdef DLOPEN_GSETTINGS
-  gio_handle_ = dlopen("libgio-2.0.so", RTLD_NOW | RTLD_GLOBAL);
+  gio_handle_ = dlopen("libgio-2.0.so.0", RTLD_NOW | RTLD_GLOBAL);
   if (!gio_handle_) {
-    VLOG(1) << "Cannot load gio library. Will fall back to gconf.";
-    return false;
+    // Try again without .0 at the end; on some systems this may be required.
+    gio_handle_ = dlopen("libgio-2.0.so", RTLD_NOW | RTLD_GLOBAL);
+    if (!gio_handle_) {
+      VLOG(1) << "Cannot load gio library. Will fall back to gconf.";
+      return false;
+    }
   }
   if (!LoadSymbol("g_settings_new",
                   reinterpret_cast<void**>(&g_settings_new)) ||
       !LoadSymbol("g_settings_get_child",
                   reinterpret_cast<void**>(&g_settings_get_child)) ||
       !LoadSymbol("g_settings_get_string",
                   reinterpret_cast<void**>(&g_settings_get_string)) ||
       !LoadSymbol("g_settings_get_boolean",
                   reinterpret_cast<void**>(&g_settings_get_boolean)) ||
       !LoadSymbol("g_settings_get_int",
@@ skipping 940 matching lines @@
 void ProxyConfigServiceLinux::RemoveObserver(Observer* observer) {
   delegate_->RemoveObserver(observer);
 }
 
 ProxyConfigService::ConfigAvailability
     ProxyConfigServiceLinux::GetLatestProxyConfig(ProxyConfig* config) {
   return delegate_->GetLatestProxyConfig(config);
 }
 
 }  // namespace net