Issue 6201. Clean up to replace 'interface' with 'abstract class'

editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/cleanup/MigrateCleanUpTest.java

Index: editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/cleanup/MigrateCleanUpTest.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/cleanup/MigrateCleanUpTest.java b/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/cleanup/MigrateCleanUpTest.java
index ba918df8cdd266af2dfe2e07ba707f12806fb6cd..9cd950bd08acf06ad346b9fa3e9515f77c368bd8 100644
--- a/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/cleanup/MigrateCleanUpTest.java
+++ b/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/cleanup/MigrateCleanUpTest.java
@@ -21,6 +21,7 @@ import com.google.dart.tools.ui.internal.cleanup.migration.Migrate_1M1_library_C
 import com.google.dart.tools.ui.internal.cleanup.migration.Migrate_1M1_optionalNamed_CleanUp;
 import com.google.dart.tools.ui.internal.cleanup.migration.Migrate_1M1_parseNum_CleanUp;
 import com.google.dart.tools.ui.internal.cleanup.migration.Migrate_1M1_rawString_CleanUp;
+import com.google.dart.tools.ui.internal.cleanup.migration.Migrate_1M2_removeInterface_CleanUp;
 import com.google.dart.tools.ui.internal.cleanup.migration.Migrate_1M2_renameTypes_CleanUp;
 import com.google.dart.tools.ui.internal.cleanup.migration.Migrate_1M2_toGetters_CleanUp;
 
@@ -942,6 +943,39 @@ public final class MigrateCleanUpTest extends AbstractCleanUpTest {
     assertCleanUp(cleanUp, initial, expected);
   }
 
+  public void test_1M2_removeInterface() throws Exception {
+    ICleanUp cleanUp = new Migrate_1M2_removeInterface_CleanUp();
+    String initial = makeSource(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "interface I default B {",
+        "  I();",
+        "  I.name();",
+        "  foo();",
+        "}",
+        "",
+        "class B implements I {",
+        "  B() {}",
+        "  B.name() {}",
+        "  foo() {}",
+        "}",
+        "");
+    String expected = makeSource(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "abstract class I {",
+        "  factory I() = B;",
+        "  factory I.name() = B.name;",
+        "  foo();",
+        "}",
+        "",
+        "class B implements I {",
+        "  B() {}",
+        "  B.name() {}",
+        "  foo() {}",
+        "}",
+        "");
+    assertCleanUp(cleanUp, initial, expected);
+  }
+
   public void test_1M2_renameExceptions() throws Exception {
     ICleanUp cleanUp = new Migrate_1M2_renameTypes_CleanUp();
     String initial = makeSource(