Some improvements to the command-line analyzer's output.

pkg/analyzer_cli/lib/src/build_mode.dart

Index: pkg/analyzer_cli/lib/src/build_mode.dart
diff --git a/pkg/analyzer_cli/lib/src/build_mode.dart b/pkg/analyzer_cli/lib/src/build_mode.dart
index 8249e77d667490df047656a798642896f1ce6969..17c27aee4d36ac1ba6316c929699796ddb0328ea 100644
--- a/pkg/analyzer_cli/lib/src/build_mode.dart
+++ b/pkg/analyzer_cli/lib/src/build_mode.dart
@@ -24,9 +24,9 @@ import 'package:analyzer/src/summary/summarize_ast.dart';
 import 'package:analyzer/src/summary/summarize_elements.dart';
 import 'package:analyzer/src/summary/summary_sdk.dart' show SummaryBasedDartSdk;
 import 'package:analyzer/task/dart.dart';
-import 'package:analyzer_cli/src/analyzer_impl.dart';
 import 'package:analyzer_cli/src/driver.dart';
 import 'package:analyzer_cli/src/error_formatter.dart';
+import 'package:analyzer_cli/src/error_severity.dart';
 import 'package:analyzer_cli/src/options.dart';
 import 'package:bazel_worker/bazel_worker.dart';
 
@@ -149,7 +149,7 @@ class BuildMode {
   ErrorSeverity analyze() {
     // Write initial progress message.
     if (!options.machineFormat) {
-      outSink.writeln("Analyzing sources ${options.sourceFiles}...");
+      outSink.writeln("Analyzing ${options.sourceFiles.join(', ')}...");
     }
 
     // Create the URI to file map.
@@ -225,8 +225,8 @@ class BuildMode {
       for (Source source in explicitSources) {
         AnalysisErrorInfo errorInfo = context.getErrors(source);
         for (AnalysisError error in errorInfo.errors) {
-          ProcessedSeverity processedSeverity = AnalyzerImpl.processError(
-              error, options, context.analysisOptions);
+          ProcessedSeverity processedSeverity =
+              processError(error, options, context.analysisOptions);
           if (processedSeverity != null) {
             maxSeverity = maxSeverity.max(processedSeverity.severity);
           }
@@ -319,7 +319,7 @@ class BuildMode {
         options,
         stats,
         (AnalysisError error) =>
-            AnalyzerImpl.processError(error, options, context.analysisOptions));
+            processError(error, options, context.analysisOptions));
     for (Source source in explicitSources) {
       AnalysisErrorInfo errorInfo = context.getErrors(source);
       formatter.formatErrors([errorInfo]);