Add a minimal Security panel to DevTools (behind a hidden experiment).

Source/devtools/front_end/security/SecurityModel.js

Index: Source/devtools/front_end/security/SecurityModel.js
diff --git a/Source/devtools/front_end/security/SecurityModel.js b/Source/devtools/front_end/security/SecurityModel.js
new file mode 100644
index 0000000000000000000000000000000000000000..e9e75c23608b3d0e01813426c314116b6f5efeeb
--- /dev/null
+++ b/Source/devtools/front_end/security/SecurityModel.js
@@ -0,0 +1,68 @@
+// Copyright 2015 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.
+
+/**
+ * @constructor
+ * @extends {WebInspector.SDKModel}
+ * @param {!WebInspector.Target} target
+ */
+WebInspector.SecurityModel = function(target)
+{
+    WebInspector.SDKModel.call(this, WebInspector.SecurityModel, target);
+    this._dispatcher = new WebInspector.SecurityDispatcher(this);
+    this._securityAgent = target.securityAgent();
+    target.registerSecurityDispatcher(this._dispatcher);
+    this._securityAgent.enable();
+
+    this._securityState = "unknown";
+}
+
+WebInspector.SecurityModel.EventTypes = {
+    SecurityStateChanged: "SecurityStateChanged"
+}
+
+WebInspector.SecurityModel.prototype = {
+    /**
+     * @return {!SecurityAgent.SecurityState} securityState
+     */
+    securityState: function()
+    {
+        return /** @type {!SecurityAgent.SecurityState} */ (this._securityState);
+    },
+
+    __proto__: WebInspector.SDKModel.prototype
+}
+
+/**
+ * @param {!WebInspector.Target} target
+ * @return {?WebInspector.SecurityModel}
+ */
+WebInspector.SecurityModel.fromTarget = function(target)
+{
+    var model = /** @type {?WebInspector.SecurityModel} */ (target.model(WebInspector.SecurityModel));
+    if (!model)
+        model = new WebInspector.SecurityModel(target);
+    return model;
+}
+
+/**
+ * @constructor
+ * @implements {SecurityAgent.Dispatcher}
+ */
+WebInspector.SecurityDispatcher = function(model)
+{
+    this._model = model;
+}
+
+WebInspector.SecurityDispatcher.prototype = {
+    /**
+     * @override
+     * @param {!SecurityAgent.SecurityState} securityState
+     */
+    securityStateChanged: function(securityState)
+    {
+        this._model._securityState = securityState;
+        this._model.dispatchEventToListeners(WebInspector.SecurityModel.EventTypes.SecurityStateChanged, securityState);
+    }
+}