Move completion APIs to a private location

pkg/analysis_server/lib/completion/completion_core.dart

Index: pkg/analysis_server/lib/completion/completion_core.dart
diff --git a/pkg/analysis_server/lib/completion/completion_core.dart b/pkg/analysis_server/lib/completion/completion_core.dart
deleted file mode 100644
index 5003faf790e338b261d7bc9f10c092f612d05e54..0000000000000000000000000000000000000000
--- a/pkg/analysis_server/lib/completion/completion_core.dart
+++ /dev/null
@@ -1,84 +0,0 @@
-// Copyright (c) 2015, 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 analysis_server.completion.completion_core;
-
-import 'package:analysis_server/src/protocol.dart';
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart';
-
-/**
- * An object used to produce completions for a specific error. Completion
- * contributors are long-lived objects and must not retain any state between
- * invocations of [computeSuggestions].
- *
- * Clients are expected to subtype this class when implementing plugins.
- */
-abstract class CompletionContributor {
-  /**
-   * Compute a list of completion suggestions based on the given completion
-   * [request]. Return the suggestions that were computed.
-   */
-  List<CompletionSuggestion> computeSuggestions(CompletionRequest request);
-}
-
-/**
- * The information about a requested list of completions.
- *
- * Clients are not expected to subtype this class.
- */
-abstract class CompletionRequest {
-  /**
-   * Return the analysis context in which the completion is being requested.
-   */
-  AnalysisContext get context;
-
-  /**
-   * Return the offset within the source at which the completion is being
-   * requested.
-   */
-  int get offset;
-
-  /**
-   * Return the resource provider associated with this request.
-   */
-  ResourceProvider get resourceProvider;
-
-  /**
-   * Return the source in which the completion is being requested.
-   */
-  Source get source;
-}
-
-/**
- * The result of computing suggestions for code completion.
- *
- * Clients are expected to subtype this class when implementing plugins.
- */
-abstract class CompletionResult {
-  /**
-   * Return the length of the text to be replaced. This will be zero (0) if the
-   * suggestion is to be inserted, otherwise it will be greater than zero. For
-   * example, if the remainder of the identifier containing the cursor is to be
-   * replaced when the suggestion is applied, in which case the length will be
-   * the number of characters in the existing identifier.
-   */
-  int get replacementLength;
-
-  /**
-   * Return the offset of the start of the text to be replaced. This will be
-   * different than the offset used to request the completion suggestions if
-   * there was a portion of text that needs to be replaced. For example, if a
-   * partial identifier is immediately before the original offset, in which case
-   * the replacementOffset will be the offset of the beginning of the
-   * identifier.
-   */
-  int get replacementOffset;
-
-  /**
-   * Return the list of suggestions being contributed by the contributor.
-   */
-  List<CompletionSuggestion> get suggestions;
-}