Move print to corelib.

runtime/vm/parser.cc

Index: runtime/vm/parser.cc
diff --git a/runtime/vm/parser.cc b/runtime/vm/parser.cc
index fd4456805c347d005e4f3deae981a7dfa92b5a14..ff809442f3d96253d1a2377e565349dd6e756651 100644
--- a/runtime/vm/parser.cc
+++ b/runtime/vm/parser.cc
@@ -7702,6 +7702,7 @@ RawObject* Parser::ResolveNameInCurrentLibraryScope(intptr_t ident_pos,
     // Name is not found in current library. Check scope of all
     // imported libraries.
     String& first_lib_url = String::Handle();
+    String& current_lib_url = String::Handle();
     Library& lib = Library::Handle();
     intptr_t num_imports = library_.num_imports();
     Object& resolved_obj = Object::Handle();
@@ -7709,7 +7710,11 @@ RawObject* Parser::ResolveNameInCurrentLibraryScope(intptr_t ident_pos,
       lib ^= library_.ImportAt(i);
       resolved_obj = LookupNameInLibrary(lib, name);
       if (!resolved_obj.IsNull()) {
-        if (!first_lib_url.IsNull()) {
+        current_lib_url = lib.url();
+        if (first_lib_url.IsNull()) {
+          first_lib_url = lib.url();
+          obj = resolved_obj.raw();
+        } else if (!first_lib_url.Equals(current_lib_url)) {
           // Found duplicate definition.
           ErrorMsg(ident_pos,
                    "ambiguous reference: "
@@ -7717,9 +7722,6 @@ RawObject* Parser::ResolveNameInCurrentLibraryScope(intptr_t ident_pos,
                    name.ToCString(),
                    first_lib_url.ToCString(),
                    String::Handle(lib.url()).ToCString());
-        } else {
-          first_lib_url = lib.url();
-          obj = resolved_obj.raw();
         }
       }
     }