Add a diagnostic.getServerPort analysis server request.

pkg/analysis_server/test/integration/protocol_matchers.dart

Index: pkg/analysis_server/test/integration/protocol_matchers.dart
diff --git a/pkg/analysis_server/test/integration/protocol_matchers.dart b/pkg/analysis_server/test/integration/protocol_matchers.dart
index 7f2f3abcb0cc9bfaa0817ca02019c27d56ce3a69..e8e98a6f8cd674638b50bfd5de57efde2364cd59 100644
--- a/pkg/analysis_server/test/integration/protocol_matchers.dart
+++ b/pkg/analysis_server/test/integration/protocol_matchers.dart
@@ -1053,6 +1053,23 @@ final Matcher isDiagnosticGetDiagnosticsResult = new LazyMatcher(() => new Match
   }));
 
 /**
+ * diagnostic.getServerPort params
+ */
+final Matcher isDiagnosticGetServerPortParams = isNull;
+
+/**
+ * diagnostic.getServerPort result
+ *
+ * {
+ *   "port": int
+ * }
+ */
+final Matcher isDiagnosticGetServerPortResult = new LazyMatcher(() => new MatchesJsonObject(
+  "diagnostic.getServerPort result", {
+    "port": isInt
+  }));
+
+/**
  * AddContentOverlay
  *
  * {
@@ -2118,6 +2135,7 @@ final Matcher isRequestError = new LazyMatcher(() => new MatchesJsonObject(
  *   NO_INDEX_GENERATED
  *   ORGANIZE_DIRECTIVES_ERROR
  *   REFACTORING_REQUEST_CANCELLED
+ *   ERROR_HANDLING_REQUEST
  *   SERVER_ALREADY_STARTED
  *   SERVER_ERROR
  *   SORT_MEMBERS_INVALID_FILE
@@ -2145,6 +2163,7 @@ final Matcher isRequestErrorCode = new MatchesEnum("RequestErrorCode", [
   "NO_INDEX_GENERATED",
   "ORGANIZE_DIRECTIVES_ERROR",
   "REFACTORING_REQUEST_CANCELLED",
+  "ERROR_HANDLING_REQUEST",
   "SERVER_ALREADY_STARTED",
   "SERVER_ERROR",
   "SORT_MEMBERS_INVALID_FILE",