analyzer: disable unknown doc directive reporting

Related to failed engine roll:
https://github.com/flutter/flutter/pull/135641

Change-Id: I2411d15fcd5e3091a37e12580d3905b43ca9cad1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/328382
Auto-Submit: Samuel Rawlins <srawlins@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>
Commit-Queue: Zach Anderson <zra@google.com>

pkg/analyzer/lib/src/fasta/doc_comment_builder.dart

diff --git a/pkg/analyzer/lib/src/fasta/doc_comment_builder.dart b/pkg/analyzer/lib/src/fasta/doc_comment_builder.dart
index f875d42..a7a2633 100644
--- a/pkg/analyzer/lib/src/fasta/doc_comment_builder.dart
+++ b/pkg/analyzer/lib/src/fasta/doc_comment_builder.dart
@@ -426,12 +426,17 @@
         _pushDocDirective(parser.simpleDirective(DocDirectiveType.youtube));
         return true;
     }
-    _errorReporter?.reportErrorForOffset(
-      WarningCode.DOC_DIRECTIVE_UNKNOWN,
-      _characterSequence._offset + nameIndex,
-      nameEnd - nameIndex,
-      [name],
-    );
+    // Do not report [WarningCode.DOC_DIRECTIVE_UNKNOWN] until Flutter customer
+    // code is either cleaned or we support all of the directives they use.
+    // In particular, https://github.com/macosui/macos_ui uses `@image`.
+    if (1 == 2) {
+      _errorReporter?.reportErrorForOffset(
+        WarningCode.DOC_DIRECTIVE_UNKNOWN,
+        _characterSequence._offset + nameIndex,
+        nameEnd - nameIndex,
+        [name],
+      );
+    }
     return false;
   }
 

pkg/analyzer/test/src/dart/parser/doc_comment_test.dart

diff --git a/pkg/analyzer/test/src/dart/parser/doc_comment_test.dart b/pkg/analyzer/test/src/dart/parser/doc_comment_test.dart
index d95d3d0..5c13564 100644
--- a/pkg/analyzer/test/src/dart/parser/doc_comment_test.dart
+++ b/pkg/analyzer/test/src/dart/parser/doc_comment_test.dart
@@ -1753,6 +1753,7 @@
 ''');
   }
 
+  @FailingTest(reason: 'Not reporting WarningCode.DOC_DIRECTIVE_UNKNOWN yet')
   test_unknownDocDirective() {
     final parseResult = parseStringWithErrors(r'''
 int x = 0;