Add analytics to analyzer-cli and analysis server.

pkg/analysis_server/lib/src/domain_analysis.dart

Index: pkg/analysis_server/lib/src/domain_analysis.dart
diff --git a/pkg/analysis_server/lib/src/domain_analysis.dart b/pkg/analysis_server/lib/src/domain_analysis.dart
index eb75faacdb19bf845e022a1e7a51a6cba44a99f1..2dd483b6c873afff7c589d171b4867ff07787c76 100644
--- a/pkg/analysis_server/lib/src/domain_analysis.dart
+++ b/pkg/analysis_server/lib/src/domain_analysis.dart
@@ -248,6 +248,8 @@ class AnalysisDomainHandler extends AbstractRequestHandler {
    * Implement the 'analysis.reanalyze' request.
    */
   Response reanalyze(Request request) {
+    server.options.analytics?.sendEvent('analysis', 'reanalyze');
+
     AnalysisReanalyzeParams params =
         new AnalysisReanalyzeParams.fromRequest(request);
     List<String> roots = params.roots;
@@ -284,6 +286,10 @@ class AnalysisDomainHandler extends AbstractRequestHandler {
     var params = new AnalysisSetAnalysisRootsParams.fromRequest(request);
     List<String> includedPathList = params.included;
     List<String> excludedPathList = params.excluded;
+
+    server.options.analytics?.sendEvent('analysis', 'setAnalysisRoots',
+        value: includedPathList.length);
+
     // validate
     for (String path in includedPathList) {
       if (!server.isValidFilePath(path)) {