Adding `content_security_policy` to a few sample extensions

chrome/common/extensions/docs/examples/extensions/ttsdebug/ttsdebug.css

Index: chrome/common/extensions/docs/examples/extensions/ttsdebug/ttsdebug.css
diff --git a/chrome/common/extensions/docs/examples/extensions/ttsdebug/ttsdebug.css b/chrome/common/extensions/docs/examples/extensions/ttsdebug/ttsdebug.css
new file mode 100644
index 0000000000000000000000000000000000000000..86f603eca56fb5d029bf55a481eecefa63d8cf73
--- /dev/null
+++ b/chrome/common/extensions/docs/examples/extensions/ttsdebug/ttsdebug.css
@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) 2011 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.
+ */
+
+#main {
+  font-family: arial,helvetica;
+  font-size: 10pt;
+  text-align: center;
+  margin-left: auto;
+  margin-right: auto;
+  padding: 10px 30px 20px 30px;
+  width: 800px;
+  border-left: solid 1px #ccc;
+  border-right: solid 1px #ccc;
+}
+#stop {
+  margin-left: 100px;
+}
+#container {
+  text-align: left;
+}
+#instructions {
+  text-align: left;
+}
+.outer {
+  margin: 12px 6px 6px 6px;
+  padding: 6px;
+  border: 1px solid #000;
+}
+.outer.disabled {
+  border: 1px solid #696969;
+}
+.runTestButton {
+  margin: 12px;
+}
+.description {
+  margin: 6px 12px;
+}
+.results {
+  margin: 12px;
+}
+.messages {
+  margin: 12px;
+}
+.error {
+  color: #900;
+}
+.result {
+  margin: 6px;
+  padding: 6px;
+}
+.success {
+  font-weight: bold;
+  color: #090;
+}
+.failure {
+  font-weight: bold;
+  color: #900;
+}
+.disabled {
+  color: #696969 !important;
+}