Renames to move closer to the new API

pkg/analysis_server/lib/completion/completion_dart.dart

Index: pkg/analysis_server/lib/completion/completion_dart.dart
diff --git a/pkg/analysis_server/lib/completion/completion_dart.dart b/pkg/analysis_server/lib/completion/completion_dart.dart
index daeba77a3e3fac4225478b7eea77ee62aa11667e..590e13d3b87474e4a5280894ca2d57c793f34a72 100644
--- a/pkg/analysis_server/lib/completion/completion_dart.dart
+++ b/pkg/analysis_server/lib/completion/completion_dart.dart
@@ -5,7 +5,10 @@
 library analysis_server.completion.completion_dart;
 
 import 'package:analysis_server/completion/completion_core.dart';
+import 'package:analysis_server/src/services/completion/completion_dart.dart';
 import 'package:analyzer/src/generated/ast.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 within a Dart
@@ -17,10 +20,30 @@ import 'package:analyzer/src/generated/ast.dart';
 abstract class DartCompletionContributor extends CompletionContributor {
   @override
   CompletionResult computeSuggestions(CompletionRequest request) {
-    // TODO(brianwilkerson) Implement this by getting the information required
-    // to create a DartCompletionRequest and calling:
-    // return internalComputeSuggestions(dartRequest);
-    return null;
+    if (request is DartCompletionRequest) {
+      return internalComputeSuggestions(request);
+    }
+    AnalysisContext context = request.context;
+    Source source = request.source;
+    List<Source> libraries = context.getLibrariesContaining(source);
+    if (libraries.length < 1) {
+      return null;
+    }
+    CompilationUnit unit =
+        context.getResolvedCompilationUnit2(source, libraries[0]);
+    bool isResolved = true;
+    if (unit == null) {
+      // TODO(brianwilkerson) Implement a method for getting a parsed
+      // compilation unit without parsing the unit if it hasn't been parsed.
+//      unit = context.getParsedCompilationUnit(source);
+      if (unit == null) {
+        return null;
+      }
+      isResolved = false;
+    }
+    DartCompletionRequest dartRequest =
+        new DartCompletionRequestImpl(request, unit, isResolved);
+    return internalComputeSuggestions(dartRequest);
   }
 
   /**
@@ -42,7 +65,7 @@ abstract class DartCompletionRequest extends CompletionRequest {
   bool get isResolved;
 
   /**
-   * The compilation unit in which the completion was requested.
+   * Return the compilation unit in which the completion was requested.
    */
   CompilationUnit get unit;
 
@@ -52,7 +75,7 @@ abstract class DartCompletionRequest extends CompletionRequest {
   //DartCompletionCache get cache;
 
   /**
-   * The completion target.  This determines what part of the parse tree
+   * Return the completion target.  This determines what part of the parse tree
    * will receive the newly inserted text.
    */
   //CompletionTarget get target;