Introduce browser-side plumbing for sending the lock icon status to DevTools.

content/public/browser/web_contents_observer.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 
 #include "base/process/kill.h"
 #include "base/process/process_handle.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/common/frame_navigate_params.h"
+#include "content/public/common/security_style.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/page_transition_types.h"
 #include "ui/base/window_open_disposition.h"
 
 namespace content {
 
 class NavigationEntry;
 class RenderFrameHost;
@@ skipping 126 matching lines @@
   // committed.
   //
   // If the navigation only changed the reference fragment, or was triggered
   // using the history API (e.g. window.history.replaceState), we will receive
   // this signal without a prior DidStartProvisionalLoadForFrame signal.
   virtual void DidCommitProvisionalLoadForFrame(
       RenderFrameHost* render_frame_host,
       const GURL& url,
       ui::PageTransition transition_type) {}
 
+  // This method is invoked when the security style of the WebContents changes.
+  virtual void SecurityStyleChanged(content::SecurityStyle security_style) {}
+
   // This method is invoked when the provisional load failed.
   virtual void DidFailProvisionalLoad(
       RenderFrameHost* render_frame_host,
       const GURL& validated_url,
       int error_code,
       const base::string16& error_description) {}
 
   // If the provisional load corresponded to the main frame, this method is
   // invoked in addition to DidCommitProvisionalLoadForFrame.
   virtual void DidNavigateMainFrame(
@@ skipping 222 matching lines @@
   void ResetWebContents();
 
   WebContentsImpl* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_