update keyword suggestion priorities

pkg/analysis_server/lib/src/services/completion/keyword_computer.dart

Index: pkg/analysis_server/lib/src/services/completion/keyword_computer.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/keyword_computer.dart b/pkg/analysis_server/lib/src/services/completion/keyword_computer.dart
index 4091f9f2828bef5b4fe5f042313f94d1c0663f31..714c483c71304d5cc5477e8a5fa50539923f3cfc 100644
--- a/pkg/analysis_server/lib/src/services/completion/keyword_computer.dart
+++ b/pkg/analysis_server/lib/src/services/completion/keyword_computer.dart
@@ -87,12 +87,12 @@ class _KeywordVisitor extends GeneralizingAstVisitor {
     // Very simplistic suggestion because analyzer will warn if
     // the extends / with / implements keywords are out of order
     if (node.extendsClause == null) {
-      _addSuggestion(Keyword.EXTENDS);
+      _addSuggestion(Keyword.EXTENDS, CompletionRelevance.HIGH);
     } else if (node.withClause == null) {
-      _addSuggestion(Keyword.WITH);
+      _addSuggestion(Keyword.WITH, CompletionRelevance.HIGH);
     }
     if (node.implementsClause == null) {
-      _addSuggestion(Keyword.IMPLEMENTS);
+      _addSuggestion(Keyword.IMPLEMENTS, CompletionRelevance.HIGH);
     }
   }
 
@@ -120,16 +120,18 @@ class _KeywordVisitor extends GeneralizingAstVisitor {
     if (firstDirective is! LibraryDirective) {
       if (firstDirective != null) {
         if (request.offset <= firstDirective.offset) {
-          _addSuggestions([Keyword.LIBRARY]);
+          _addSuggestions([Keyword.LIBRARY], CompletionRelevance.HIGH);
         }
       } else {
         if (request.offset <= startOfDeclarations) {
-          _addSuggestions([Keyword.LIBRARY]);
+          _addSuggestions([Keyword.LIBRARY], CompletionRelevance.HIGH);
         }
       }
     }
     if (request.offset <= startOfDeclarations) {
-      _addSuggestions([Keyword.EXPORT, Keyword.IMPORT, Keyword.PART]);
+      _addSuggestions(
+          [Keyword.EXPORT, Keyword.IMPORT, Keyword.PART],
+          CompletionRelevance.HIGH);
     }
     if (request.offset >= endOfDirectives) {
       _addSuggestions(
@@ -139,7 +141,8 @@ class _KeywordVisitor extends GeneralizingAstVisitor {
               Keyword.CONST,
               Keyword.FINAL,
               Keyword.TYPEDEF,
-              Keyword.VAR]);
+              Keyword.VAR],
+          CompletionRelevance.HIGH);
     }
   }
 
@@ -164,12 +167,13 @@ class _KeywordVisitor extends GeneralizingAstVisitor {
     }
   }
 
-  void _addSuggestion(Keyword keyword) {
+  void _addSuggestion(Keyword keyword, [CompletionRelevance relevance =
+      CompletionRelevance.DEFAULT]) {
     String completion = keyword.syntax;
     request.suggestions.add(
         new CompletionSuggestion(
             CompletionSuggestionKind.KEYWORD,
-            CompletionRelevance.DEFAULT,
+            relevance,
             completion,
             completion.length,
             0,
@@ -177,9 +181,10 @@ class _KeywordVisitor extends GeneralizingAstVisitor {
             false));
   }
 
-  void _addSuggestions(List<Keyword> keywords) {
+  void _addSuggestions(List<Keyword> keywords, [CompletionRelevance relevance =
+      CompletionRelevance.DEFAULT]) {
     keywords.forEach((Keyword keyword) {
-      _addSuggestion(keyword);
+      _addSuggestion(keyword, relevance);
     });
   }