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chrome/browser/dom_ui/shared_resources_data_source.cc

Index: chrome/browser/dom_ui/shared_resources_data_source.cc
diff --git a/chrome/browser/dom_ui/shared_resources_data_source.cc b/chrome/browser/dom_ui/shared_resources_data_source.cc
index d460cddc54df3decb9a5c51f9d1653c4f5530b40..8c7957bd7bbc9b4138ab4b7397a6b9579294f2f4 100644
--- a/chrome/browser/dom_ui/shared_resources_data_source.cc
+++ b/chrome/browser/dom_ui/shared_resources_data_source.cc
@@ -73,7 +73,7 @@ void SharedResourcesDataSource::StartDataRequest(const std::string& path,
                                                  bool is_off_the_record,
                                                  int request_id) {
   int idr = PathToIDR(path);
-  DCHECK_NE(-1, idr);
+  DCHECK_NE(-1, idr) << "Couldn't find shared resource: " << path;
   const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   scoped_refptr<RefCountedStaticMemory> bytes(rb.LoadDataResourceBytes(idr));
   SendResponse(request_id, bytes);