DevTools: return remote debugging targets sorted by last active time (as it was long ago).

chrome/browser/devtools/device/devtools_device_discovery.cc

 // Copyright 2014 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 "chrome/browser/devtools/device/devtools_device_discovery.h"
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 120 matching lines @@
   void Detach() override;
   std::string GetType() override;
   std::string GetTitle() override;
   std::string GetDescription() override;
   GURL GetURL() override;
   GURL GetFaviconURL() override;
   std::string GetFrontendURL() override;
   bool Activate() override;
   void Reload() override;
   bool Close() override;
+  base::TimeTicks GetLastActivityTime() override;
   void SendMessageToBackend(const std::string& message) override;
 
   void OnSocketOpened() override;
   void OnFrameRead(const std::string& message) override;
   void OnSocketClosed() override;
 
   void SendProtocolCommand(const std::string& target_path,
                            const std::string& method,
                            std::unique_ptr<base::DictionaryValue> params,
                            const base::Closure callback);
@@ skipping 158 matching lines @@
                       base::Closure());
 }
 
 bool AgentHostDelegate::Close() {
   std::string request = base::StringPrintf(kClosePageRequest,
                                            remote_id_.c_str());
   device_->SendJsonRequest(browser_id_, request, base::Bind(&NoOp));
   return true;
 }
 
+base::TimeTicks AgentHostDelegate::GetLastActivityTime() {
+  return base::TimeTicks();
+}
+
 void AgentHostDelegate::SendMessageToBackend(const std::string& message) {
   // We could have detached due to physical connection being closed.
   if (!proxy_)
     return;
   if (socket_opened_)
     web_socket_->SendFrame(message);
   else
     pending_messages_.push_back(message);
 }
 
@@ skipping 283 matching lines @@
 }
 
 void DevToolsDeviceDiscovery::ReceivedDeviceList(
     const CompleteDevices& complete_devices) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   task_scheduler_.Run(base::Bind(&DevToolsDeviceDiscovery::RequestDeviceList,
                                  weak_factory_.GetWeakPtr()));
   // |callback_| should be run last as it may destroy |this|.
   callback_.Run(complete_devices);
 }