DevTools: Add parent id to target descriptor in remote debugging.

chrome/browser/android/dev_tools_server.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 "chrome/browser/android/dev_tools_server.h"
 
 #include <pwd.h>
 #include <cstring>
 
 #include "base/android/jni_string.h"
@@ skipping 61 matching lines @@
   content::NavigationController& controller = web_contents->GetController();
   content::NavigationEntry* entry = controller.GetActiveEntry();
   if (entry != NULL && entry->GetURL().is_valid())
     return entry->GetFavicon().url;
   return GURL();
 }
 
 class TargetBase : public content::DevToolsTarget {
  public:
   // content::DevToolsTarget implementation:
+  virtual std::string GetParentId() const OVERRIDE { return std::string(); }
+
   virtual std::string GetTitle() const OVERRIDE { return title_; }
 
   virtual std::string GetDescription() const OVERRIDE { return std::string(); }
 
   virtual GURL GetURL() const OVERRIDE { return url_; }
 
   virtual GURL GetFaviconURL() const OVERRIDE { return favicon_url_; }
 
   virtual base::TimeTicks GetLastActivityTime() const OVERRIDE {
     return last_activity_time_;
@@ skipping 375 matching lines @@
                                       jobject obj,
                                       jlong server,
                                       jboolean enabled) {
   DevToolsServer* devtools_server = reinterpret_cast<DevToolsServer*>(server);
   if (enabled) {
     devtools_server->Start();
   } else {
     devtools_server->Stop();
   }
 }