Add Server PID to Server Status page.

pkg/analysis_server/lib/src/status/get_handler.dart

Index: pkg/analysis_server/lib/src/status/get_handler.dart
diff --git a/pkg/analysis_server/lib/src/status/get_handler.dart b/pkg/analysis_server/lib/src/status/get_handler.dart
index 05d651b9a6d08ae65ff48d6a0d1ead7d9c76672f..24fbb2a3cada18c1186ee3cff5791d54a0717379 100644
--- a/pkg/analysis_server/lib/src/status/get_handler.dart
+++ b/pkg/analysis_server/lib/src/status/get_handler.dart
@@ -1765,6 +1765,9 @@ class GetHandler {
       buffer.write('<br>');
       buffer.write('Version: ');
       buffer.write(AnalysisServer.VERSION);
+      buffer.write('<br>');
+      buffer.write('Process ID: ');
+      buffer.write(pid);
       buffer.write('</p>');
 
       buffer.write('<p><b>Performance Data</b></p>');