Consolidate analyzer dependencies.

pkg/front_end/lib/src/fasta/analyzer/compile_platform_dartk.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 'dart:io' show File, IOSink;
 
 import 'package:analyzer/src/generated/source.dart' show Source;
 
 import 'package:analyzer/dart/element/element.dart'
     show ExportElement, LibraryElement;
 
 import 'package:kernel/ast.dart'
     show Field, Library, Name, Program, StringLiteral;
 
 import 'package:kernel/binary/ast_to_binary.dart' show BinaryPrinter;
 
 import 'package:kernel/analyzer/loader.dart'
     show DartLoader, DartOptions, createDartSdk;
 
 import 'package:kernel/target/targets.dart' show Target, TargetFlags, getTarget;
 
 import 'package:kernel/ast.dart' show Program;
 
-import 'environment_variable.dart'
+import '../environment_variable.dart'
     show EnvironmentVariableDirectory, fileExists;
 
-import 'errors.dart' show inputError;
+import '../errors.dart' show inputError;
 
 const EnvironmentVariableSdk dartAotSdk = const EnvironmentVariableSdk(
     "DART_AOT_SDK",
     "The environment variable 'DART_AOT_SDK' should point to a patched SDK.");
 
 class EnvironmentVariableSdk extends EnvironmentVariableDirectory {
   const EnvironmentVariableSdk(String name, String what) : super(name, what);
 
   Future<Null> validate(String value) async {
     Uri sdk = Uri.base.resolveUri(new Uri.directory(value));
@@ skipping 68 matching lines @@
           isConst: true,
           initializer: literal,
           fileUri: "${new Uri.file(source.fullName)}")..fileOffset = offset);
     }
   }
 
   IOSink sink = new File.fromUri(output).openWrite();
   new BinaryPrinter(sink).writeProgramFile(program);
   await sink.close();
 }