Revert 175890: actually, looks like we want this to also help move chromeos webui pages out of src/…

chrome/browser/extensions/api/debugger/debugger_api.cc

Index: chrome/browser/extensions/api/debugger/debugger_api.cc
===================================================================
--- chrome/browser/extensions/api/debugger/debugger_api.cc	(revision 175970)
+++ chrome/browser/extensions/api/debugger/debugger_api.cc	(working copy)
@@ -36,6 +36,7 @@
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_client.h"
+#include "content/public/common/url_constants.h"
 #include "extensions/common/error_utils.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -428,8 +429,7 @@
   }
   contents_ = web_contents;
 
-  if (content::GetContentClient()->HasWebUIScheme(
-          contents_->GetURL())) {
+  if (content::HasWebUIScheme(contents_->GetURL())) {
     error_ = ErrorUtils::FormatErrorMessage(
         keys::kAttachToWebUIError,
         contents_->GetURL().scheme());