DevTools: expose session to handlers.

content/browser/devtools/protocol/security_handler.cc

 // 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.
 
 #include "content/browser/devtools/protocol/security_handler.h"
 
 #include <string>
 
+#include "content/browser/devtools/devtools_session.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/security_style_explanations.h"
 #include "content/public/browser/ssl_status.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 
 namespace content {
 namespace protocol {
@@ skipping 30 matching lines @@
         .SetSecurityState(security_style)
         .SetSummary(it.summary)
         .SetDescription(it.description)
         .SetHasCertificate(it.has_certificate)
         .Build());
   }
 }
 
 }  // namespace
 
+// static
+SecurityHandler* SecurityHandler::FromAgentHost(DevToolsAgentHostImpl* host) {
+  DevToolsSession* session = DevToolsDomainHandler::GetFirstSession(host);
+  if (!session)
+    return nullptr;
+  return static_cast<SecurityHandler*>(
+      session->GetHandlerByName(Security::Metainfo::domainName));
+}
+
 SecurityHandler::SecurityHandler()
     : DevToolsDomainHandler(Security::Metainfo::domainName),
       enabled_(false),
       host_(nullptr) {
 }
 
 SecurityHandler::~SecurityHandler() {
 }
 
 void SecurityHandler::Wire(UberDispatcher* dispatcher) {
@@ skipping 89 matching lines @@
       web_contents->GetController().GetVisibleEntry()->GetSSL().certificate;
   if (!certificate)
     return Response::Error("Could not find certificate");
   web_contents->GetDelegate()->ShowCertificateViewerInDevTools(
       web_contents, certificate);
   return Response::OK();
 }
 
 }  // namespace protocol
 }  // namespace content