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

chrome/common/url_constants.cc

Index: chrome/common/url_constants.cc
===================================================================
--- chrome/common/url_constants.cc	(revision 132480)
+++ chrome/common/url_constants.cc	(working copy)
@@ -418,14 +418,19 @@
 
 const char kExtensionScheme[] = "chrome-extension";
 
-void RegisterChromeSchemes() {
-  url_util::AddStandardScheme(kExtensionScheme);
+void GetAdditionalSchemes(
+    std::vector<std::string>* standard_schemes,
+    std::vector<std::string>* savable_schemes) {
+  standard_schemes->push_back(kExtensionScheme);
 #if defined(OS_CHROMEOS)
-  url_util::AddStandardScheme(kCrosScheme);
+  standard_schemes->push_back(kCrosScheme);
 #endif
 
-  // This call will also lock the list of standard schemes.
-  content::RegisterContentSchemes(kSavableSchemes);
+  int i = 0;
+  while (kSavableSchemes[i]) {
+    savable_schemes->push_back(std::string(kSavableSchemes[i]));
+    ++i;
+  }
 }
 
 }  // namespace chrome