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

content/test/content_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 "content/test/content_test_suite.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/mock_content_browser_client.h"
 #include "content/browser/notification_service_impl.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_paths.h"
+#include "content/public/common/url_constants.h"
 #include "content/test/test_content_client.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/ui_base_paths.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_nsautorelease_pool.h"
 #endif
 #include "ui/gfx/compositor/compositor_setup.h"
 
 namespace {
@@ skipping 41 matching lines @@
 ContentTestSuite::~ContentTestSuite() {
 }
 
 void ContentTestSuite::Initialize() {
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool autorelease_pool;
 #endif
 
   base::TestSuite::Initialize();
 
+  content::ContentClient client_for_init;
+  content::SetContentClient(&client_for_init);
+  content::RegisterContentSchemes(false);
+  content::SetContentClient(NULL);
+
   content::RegisterPathProvider();
   ui::RegisterPathProvider();
 
   // Mock out the compositor on platforms that use it.
   ui::SetupTestCompositor();
 
   testing::TestEventListeners& listeners =
       testing::UnitTest::GetInstance()->listeners();
   listeners.Append(new TestContentClientInitializer);
 }