Also push process_test when testing on Android hardware.

tools/testing/dart/test_suite.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Classes and methods for enumerating and preparing tests.
  *
  * This library includes:
  *
  * - Creating tests by listing all the Dart files in certain directories,
@@ skipping 216 matching lines @@
 
     if (dartExecutable == null || dartExecutable == '') {
       String suffix = executableBinarySuffix;
       dartExecutable = '$buildDir/dart_precompiled_runtime$suffix';
     }
 
     TestUtils.ensureExists(dartExecutable, configuration);
     return dartExecutable;
   }
 
+  String get processTestBinaryFileName {
+    String suffix = executableBinarySuffix;
+    String processTestExecutable = '$buildDir/process_test$suffix';
+    TestUtils.ensureExists(processTestExecutable, configuration);
+    return processTestExecutable;
+  }
+
   String get d8FileName {
     var suffix = getExecutableSuffix('d8');
     var d8Dir = TestUtils.dartDir.append('third_party/d8');
     var d8Path = d8Dir.append('${Platform.operatingSystem}/d8$suffix');
     var d8 = d8Path.toNativePath();
     TestUtils.ensureExists(d8, configuration);
     return d8;
   }
 
   String get jsShellFileName {
@@ skipping 2279 matching lines @@
       }
       if (path.length > WINDOWS_SHORTEN_PATH_LIMIT) {
         ++shortNameCounter;
         var pathEnd = path.substring(path.length - WINDOWS_PATH_END_LENGTH);
         path = "short${shortNameCounter}_$pathEnd";
       }
     }
     return path;
   }
 }