Resubmit issue 2221103002 to fix the iOS build by declaring the flag in

dm/DM.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
 #include "DMSrcSinkAndroid.h"
@@ skipping 16 matching lines @@
 #include "SkOSFile.h"
 #include "SkPM4fPriv.h"
 #include "SkSpinlock.h"
 #include "SkTHash.h"
 #include "SkTaskGroup.h"
 #include "SkThreadUtils.h"
 #include "Test.h"
 #include "Timer.h"
 #include "picture_utils.h"
 #include "sk_tool_utils.h"
+#include "SkScan.h"
 
 #ifdef SK_PDF_IMAGE_STATS
 extern void SkPDFImageDumpStats();
 #endif
 
 #include "png.h"
 
 #include <stdlib.h>
 
 #ifndef SK_BUILD_FOR_WIN32
@@ skipping 1220 matching lines @@
 
 #undef PORTABLE_FONT_PREFIX
 
 extern sk_sp<SkTypeface> (*gCreateTypefaceDelegate)(const char [], SkFontStyle );
 
 int dm_main();
 int dm_main() {
     setbuf(stdout, nullptr);
     setup_crash_handler();
 
+    if (FLAGS_analyticAA) {
+        GlobalAAConfig::getInstance().fUseAnalyticAA = true;
+    }
+
     if (FLAGS_verbose) {
         gVLog = stderr;
     } else if (!FLAGS_writePath.isEmpty()) {
         sk_mkdir(FLAGS_writePath[0]);
         gVLog = fopen(SkOSPath::Join(FLAGS_writePath[0], "verbose.log").c_str(), "w");
     }
 
     JsonWriter::DumpJson();  // It's handy for the bots to assume this is ~never missing.
     SkAutoGraphics ag;
     SkTaskGroup::Enabler enabled(FLAGS_threads);
@@ skipping 134 matching lines @@
 #endif
 }
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif