Implement line and column numbers.

utils/kernel-service/kernel-service.dart

 // Copyright (c) 2016, 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.
 
 /// This is an interface to the Dart Kernel parser and Kernel binary generator.
 ///
 /// It is used by the kernel-isolate to load Dart source code and generate
 /// Kernel binary format.
 ///
 /// This is either invoked as the root script of the Kernel isolate when used
@@ skipping 157 matching lines @@
       kernelTarget.read(fileName);
       await dillTarget.writeOutline(null);
       program = await kernelTarget.writeOutline(null);
       program = await kernelTarget.writeProgram(null, AstKind.Kernel);
       if (kernelTarget.errors.isNotEmpty) {
         return new CompilationError(kernelTarget.errors
             .map((err) => err.toString())
             .toList(growable: false));
       }
     } on InputError catch (e) {
-      return new CompilationError(<String>[e.error]);
+      return new CompilationError(<String>[e.format()]);
     }
   } else {
     DartOptions dartOptions = new DartOptions(
         strongMode: false,
         strongModeSdk: false,
         sdk: sdkPath,
         packagePath: packageConfig,
         customUriMappings: const {},
         declaredVariables: const {});
     DartLoader loader =
@@ skipping 209 matching lines @@
     if (await new File.fromUri(packagesFile).exists()) {
       return packagesFile;
     }
     if (dir.parent.path == dir.path) {
       break;
     }
     dir = dir.parent;
   }
   return null;
 }