Remove 'dumpIr' from writeProgram() and KernelTarget.

pkg/front_end/lib/src/fasta/compile_platform.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.
 
 library fasta.compile_platform;
 
 import 'dart:async' show Future;
 
+import 'package:front_end/src/fasta/kernel/utils.dart';
 import 'ticker.dart' show Ticker;
 
 import 'dart:io' show exitCode;
 
 import 'compiler_command_line.dart' show CompilerCommandLine;
 
 import 'compiler_context.dart' show CompilerContext;
 
 import 'errors.dart' show InputError;
 
@@ skipping 53 matching lines @@
   DillTarget dillTarget = new DillTarget(ticker, uriTranslator);
   KernelTarget kernelTarget = new KernelTarget(c.fileSystem, dillTarget,
       uriTranslator, c.options.strongMode, c.uriToSource);
 
   kernelTarget.read(Uri.parse("dart:core"));
   await dillTarget.buildOutlines();
   await kernelTarget.buildOutlines();
   await kernelTarget.writeOutline(outlineOutput);
 
   if (exitCode != 0) return null;
-  await kernelTarget.buildProgram();
-  await kernelTarget.writeProgram(fullOutput,
-      dumpIr: c.options.dumpIr, verify: c.options.verify);
+  var program = await kernelTarget.buildProgram();
+  if (c.options.dumpIr) printProgramText(program);
+  await kernelTarget.writeProgram(fullOutput, verify: c.options.verify);
   await kernelTarget.writeDepsFile(fullOutput, deps);
 }