Eliminate unused url mapping parameter in dartutils

runtime/bin/dartutils.cc

Index: runtime/bin/dartutils.cc
===================================================================
--- runtime/bin/dartutils.cc	(revision 35851)
+++ runtime/bin/dartutils.cc	(working copy)
@@ -174,8 +174,7 @@
 }
 
 
-Dart_Handle DartUtils::CanonicalizeURL(CommandLineOptions* url_mapping,
-                                       Dart_Handle library,
+Dart_Handle DartUtils::CanonicalizeURL(Dart_Handle library,
                                        const char* url_str) {
   // Get the url of the including library.
   Dart_Handle library_url = Dart_LibraryUrl(library);
@@ -190,13 +189,6 @@
   if (Dart_IsError(result)) {
     return Dart_NewApiError("accessing library url characters failed");
   }
-  if (url_mapping != NULL) {
-    const char* mapped_library_url_str = MapLibraryUrl(url_mapping,
-                                                       library_url_str);
-    if (mapped_library_url_str != NULL) {
-      library_url_str = mapped_library_url_str;
-    }
-  }
   // Calculate the canonical path.
   const char* canon_url_str = GetCanonicalPath(library_url_str, url_str);
   Dart_Handle canon_url = NewString(canon_url_str);
@@ -568,11 +560,7 @@
     }
     const char* final_path = NULL;
     Dart_StringToCString(file_path, &final_path);
-    result = DartUtils::LoadSource(NULL,
-                                   library,
-                                   url,
-                                   tag,
-                                   final_path);
+    result = DartUtils::LoadSource(library, url, tag, final_path);
     return result;
   }
 }
@@ -670,21 +658,11 @@
 }
 
 
-Dart_Handle DartUtils::LoadSource(CommandLineOptions* url_mapping,
-                                  Dart_Handle library,
+Dart_Handle DartUtils::LoadSource(Dart_Handle library,
                                   Dart_Handle url,
                                   Dart_LibraryTag tag,
                                   const char* url_string) {
   bool is_http_scheme_url = DartUtils::IsHttpSchemeURL(url_string);
-  if (url_mapping != NULL && IsDartSchemeURL(url_string)) {
-    const char* mapped_url_string = MapLibraryUrl(url_mapping, url_string);
-    if (mapped_url_string == NULL) {
-      return NewError("Do not know how to load %s", url_string);
-    }
-    // We have a URL mapping specified, just read the file that the
-    // URL mapping specifies and load it.
-    url_string = mapped_url_string;
-  }
   Dart_Handle source;
   if (is_http_scheme_url) {
     // Read the file over http.