linter: Add a PRESUBMIT check for example/all.yaml

Work towards https://github.com/dart-lang/sdk/issues/53578

Change-Id: Ia07d999abc2fcf4b8195c9f7688799bc099a1d88
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/341385
Reviewed-by: Phil Quitslund <pquitslund@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Reviewed-by: Jonas Termansen <sortie@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>

PRESUBMIT.py

@@ -298,14 +298,13 @@ def _CheckClangTidy(input_api, output_api):
 def _CheckAnalyzerFiles(input_api, output_api):
     """Run analyzer checks on source files."""
 
-    # The first (and so far, only) check, is to verify the "error fix status"
-    # file.
-    relevant_files = [
+    # Verify the "error fix status" file.
+    code_files = [
         "pkg/analyzer/lib/src/error/error_code_values.g.dart",
         "pkg/linter/lib/src/rules.dart",
     ]
 
-    if any(f.LocalPath() in relevant_files for f in input_api.AffectedFiles()):
+    if any(f.LocalPath() in code_files for f in input_api.AffectedFiles()):
         args = [
             "tools/sdks/dart-sdk/bin/dart",
             "pkg/analysis_server/tool/presubmit/verify_error_fix_status.dart",
@@ -320,6 +319,23 @@ def _CheckAnalyzerFiles(input_api, output_api):
                 long_text=stdout)
         ]
 
+    # Verify the linter's `example/all.yaml` file.
+    if any(f.LocalPath().startswith('pkg/linter/lib/src/rules')
+           for f in input_api.AffectedFiles()):
+        args = [
+            "tools/sdks/dart-sdk/bin/dart",
+            "pkg/analysis_server/tool/checks/check_all_yaml.dart",
+        ]
+        stdout = input_api.subprocess.check_output(args).strip()
+        if not stdout:
+            return []
+
+        return [
+            output_api.PresubmitError(
+                "The check_all_yaml linter tool revealed issues:",
+                long_text=stdout)
+        ]
+
     # TODO(srawlins): Check more:
     # * "verify_sorted" for individual modified (not deleted) files in
     #   Analyzer-team-owned directories.