[debugger] basic test infrastructure for new debugger test api.

test/debugger/debugger.isolate

Index: test/debugger/debugger.isolate
diff --git a/test/debugger/debugger.isolate b/test/debugger/debugger.isolate
new file mode 100644
index 0000000000000000000000000000000000000000..6ec27cb94a2742d44799a4259ce29313ee318783
--- /dev/null
+++ b/test/debugger/debugger.isolate
@@ -0,0 +1,22 @@
+# Copyright 2016 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'conditions': [
+    ['v8_enable_inspector==1', {
+      'variables': {
+        'files': [
+          './debugger.status',
+          './protocol/',
+          './test-api.js',
+          './testcfg.py',
+        ],
+      },
+    }],
+  ],
+  'includes': [
+    '../../src/d8.isolate',
+    '../../tools/testrunner/testrunner.isolate',
+  ],
+}