Make Dart_LoadLibrary and Dart_LoadSource take line and column offsets like Dart_LoadScript.

runtime/vm/snapshot_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 
 #include "include/dart_debugger_api.h"
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
@@ skipping 1187 matching lines @@
   }
 
   {
     // Create an Isolate using the full snapshot, load a script and create
     // a script snapshot of the script.
     TestCase::CreateTestIsolateFromSnapshot(full_snapshot);
     Dart_EnterScope();  // Start a Dart API scope for invoking API functions.
 
     // Load the library.
     Dart_Handle import_lib = Dart_LoadLibrary(NewString("dart_import_lib"),
-                                              NewString(kLibScriptChars));
+                                              NewString(kLibScriptChars),
+                                              0, 0);
     EXPECT_VALID(import_lib);
 
     // Create a test library and Load up a test script in it.
     TestCase::LoadTestScript(kScriptChars, NULL);
 
     EXPECT_VALID(Dart_LibraryImportLibrary(TestCase::lib(),
                                            import_lib,
                                            Dart_Null()));
     EXPECT_VALID(Api::CheckAndFinalizePendingClasses(Isolate::Current()));
 
@@ skipping 149 matching lines @@
   }
 
   {
     // Create an Isolate using the full snapshot, load a script and create
     // a script snapshot of the script.
     TestCase::CreateTestIsolateFromSnapshot(full_snapshot);
     Dart_EnterScope();  // Start a Dart API scope for invoking API functions.
 
     // Load the library.
     Dart_Handle import_lib = Dart_LoadLibrary(NewString("dart_import_lib"),
-                                              NewString(kLibScriptChars));
+                                              NewString(kLibScriptChars),
+                                              0, 0);
     EXPECT_VALID(import_lib);
 
     // Create a test library and Load up a test script in it.
     TestCase::LoadTestScript(kScriptChars, NULL);
 
     EXPECT_VALID(Dart_LibraryImportLibrary(TestCase::lib(),
                                            import_lib,
                                            Dart_Null()));
     EXPECT_VALID(Api::CheckAndFinalizePendingClasses(Isolate::Current()));
 
@@ skipping 1333 matching lines @@
   StackZone zone(Isolate::Current());
   uint8_t* buffer;
   MessageWriter writer(&buffer, &zone_allocator);
   writer.WriteInlinedObjectHeader(kOmittedObjectId);
   // For performance, we'd like single-byte headers when ids are omitted.
   // If this starts failing, consider renumbering the snapshot ids.
   EXPECT_EQ(1, writer.BytesWritten());
 }
 
 }  // namespace dart