Use named automation interface to control primary chrome on ChromeOS

chrome/test/functional/PYAUTO_TESTS

Index: chrome/test/functional/PYAUTO_TESTS
diff --git a/chrome/test/functional/PYAUTO_TESTS b/chrome/test/functional/PYAUTO_TESTS
index 4d228dcad687b1fbe5dfc611208336978561c5be..a199846967938874c68d128dd7284302389d901f 100644
--- a/chrome/test/functional/PYAUTO_TESTS
+++ b/chrome/test/functional/PYAUTO_TESTS
@@ -200,5 +200,26 @@
       '-translate.TranslateTest.testSessionRestore',
       '-translate.TranslateTest.testDownloadsNotTranslated',
     ],
-  }
+  },
+
+  # The PRIMARY_CHROME suite uses named automation interface to control
+  # primary chrome on ChromeOS.
+  'PRIMARY_CHROME': {
+    'all': [
+    ],
+
+    'win': [
+    ],
+
+    'mac': [
+    ],
+
+    'linux': [
+    ],
+
+    'chromeos': [
+      'chromeos_basic',
+    ],
+  },
+
 }