Move unit tests to test/unittests.

tools/run-tests.py

Index: tools/run-tests.py
diff --git a/tools/run-tests.py b/tools/run-tests.py
index c8481e6838002ca9e0310f250a7645ae330be405..670e574378549fade116805a0357ae839e54f5a9 100755
--- a/tools/run-tests.py
+++ b/tools/run-tests.py
@@ -51,9 +51,8 @@ from testrunner.objects import context
 
 
 ARCH_GUESS = utils.DefaultArch()
-DEFAULT_TESTS = ["mjsunit", "fuzz-natives", "base-unittests",
-                 "cctest", "compiler-unittests", "heap-unittests",
-                 "libplatform-unittests", "message", "preparser"]
+DEFAULT_TESTS = ["mjsunit", "fuzz-natives", "unittests",
+                 "cctest", "message", "preparser"]
 
 # Map of test name synonyms to lists of test suites. Should be ordered by
 # expected runtimes (suites with slow test cases first). These groups are
@@ -72,10 +71,7 @@ TEST_MAP = {
     "webkit",
   ],
   "unittests": [
-    "compiler-unittests",
-    "heap-unittests",
-    "base-unittests",
-    "libplatform-unittests",
+    "unittests",
   ],
 }