DM: dm.json can be missing some final results

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 "CrashHandler.h"
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
@@ skipping 1207 matching lines @@
     // With the parallel work running, run serial tasks and tests here on main thread.
     for (auto task : serial) { Task::Run(task); }
     for (auto test : gSerialTests) { run_test(test); }
 
     // Wait for any remaining parallel work to complete (including any spun off of serial tasks).
     parallel.wait();
     gDefinitelyThreadSafeWork.wait();
 
     // We'd better have run everything.
     SkASSERT(gPending == 0);
+    // Make sure we've flushed all our results to disk.
+    JsonWriter::DumpJson();
 
     // At this point we're back in single-threaded land.
     sk_tool_utils::release_portable_typefaces();
 
     if (gFailures.count() > 0) {
         SkDebugf("Failures:\n");
         for (int i = 0; i < gFailures.count(); i++) {
             SkDebugf("\t%s\n", gFailures[i].c_str());
         }
         SkDebugf("%d failures\n", gFailures.count());
@@ skipping 97 matching lines @@
                                                            Reporter* reporter,
                                                            GrContextFactory* factory);
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif