Factor out content shell and tests into a standalone gyp

content/content_shell_and_tests.gyp

Index: content/content_shell_and_tests.gyp
diff --git a/content/content_shell_and_tests.gyp b/content/content_shell_and_tests.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..d5529d034d9eedbf03538b75a4e2cf831ee2f383
--- /dev/null
+++ b/content/content_shell_and_tests.gyp
@@ -0,0 +1,19 @@
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'variables': {
+    'chromium_code': 1,  # Use higher warning level.
+  },
+  'includes': [
+    'content_tests.gypi',
+  ],
+  'conditions': [
+    ['OS != "ios"', {
+      'includes': [
+        'content_shell.gypi',
+      ],
+    }],
+  ],
+}