Provide DevToolsHttpHandlerDelegate with an ability to provide additional page info

content/browser/devtools/devtools_http_handler_impl.cc

 // 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.
 
 #include "content/browser/devtools/devtools_http_handler_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 388 matching lines @@
       : attached(false) {
   }
 
   std::string id;
   std::string url;
   std::string type;
   bool attached;
   std::string title;
   std::string thumbnail_url;
   std::string favicon_url;
+  std::string description;
   base::TimeTicks last_selected_time;
 };
 
 // static
 bool DevToolsHttpHandlerImpl::SortPageListByTime(const PageInfo& info1,
                                                  const PageInfo& info2) {
   return info1.last_selected_time > info2.last_selected_time;
 }
 
 DevToolsHttpHandlerImpl::PageList DevToolsHttpHandlerImpl::GeneratePageList() {
@@ skipping 444 matching lines @@
         net::EscapeForHTML(web_contents->GetTitle()));
     page_info.last_selected_time = web_contents->GetLastSelectedTime();
 
     NavigationController& controller = web_contents->GetController();
     NavigationEntry* entry = controller.GetActiveEntry();
     if (entry != NULL && entry->GetURL().is_valid()) {
       page_info.thumbnail_url = "/thumb/" + entry->GetURL().spec();
       page_info.favicon_url = entry->GetFavicon().url.spec();
     }
   }
+
+  page_info.description = delegate_->GetViewDescription(rvh);
+
   return page_info;
 }
 
 base::DictionaryValue* DevToolsHttpHandlerImpl::SerializePageInfo(
     const PageInfo& page_info,
     const std::string& host) {
   base::DictionaryValue* dictionary = new base::DictionaryValue;
   dictionary->SetString("title", page_info.title);
   dictionary->SetString("url", page_info.url);
   dictionary->SetString("type", page_info.type);
   dictionary->SetString("id", page_info.id);
   dictionary->SetString("thumbnailUrl", page_info.thumbnail_url);
   dictionary->SetString("faviconUrl", page_info.favicon_url);
   if (!page_info.attached) {
     dictionary->SetString("webSocketDebuggerUrl",
                           base::StringPrintf("ws://%s/devtools/page/%s",
                                              host.c_str(),
                                              page_info.id.c_str()));
     std::string devtools_frontend_url = GetFrontendURLInternal(
         page_info.id.c_str(),
         host);
     dictionary->SetString("devtoolsFrontendUrl", devtools_frontend_url);
   }
+  dictionary->SetString("description", page_info.description);
   return dictionary;
 }
 
 }  // namespace content