Get chrome:// dev tool urls hooked up in content_shell.

chrome/test/base/chrome_test_suite.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/test/base/chrome_test_suite.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/stats_table.h"
@@ skipping 148 matching lines @@
 }
 
 void ChromeTestSuite::Initialize() {
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool autorelease_pool;
   chrome_browser_application_mac::RegisterBrowserCrApp();
 #endif
 
   base::TestSuite::Initialize();
 
-  chrome::RegisterChromeSchemes();
+  chrome::ChromeContentClient client_for_init;
+  content::SetContentClient(&client_for_init);
+  content::RegisterContentSchemes(false);
+  content::SetContentClient(NULL);
 
   chrome::RegisterPathProvider();
   content::RegisterPathProvider();
   ui::RegisterPathProvider();
 
   if (!browser_dir_.empty()) {
     PathService::Override(base::DIR_EXE, browser_dir_);
     PathService::Override(base::DIR_MODULE, browser_dir_);
   }
 
@@ skipping 34 matching lines @@
 #if defined(OS_MACOSX)
   base::mac::SetOverrideFrameworkBundle(NULL);
 #endif
 
   base::StatsTable::set_current(NULL);
   stats_table_.reset();
   RemoveSharedMemoryFile(stats_filename_);
 
   base::TestSuite::Shutdown();
 }