[DevTools] Enable TCP targets discovery by default

chrome/browser/devtools/devtools_window.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/devtools/devtools_window.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
@@ skipping 358 matching lines @@
   registry->RegisterDictionaryPref(prefs::kDevToolsFileSystemPaths);
   registry->RegisterStringPref(prefs::kDevToolsAdbKey, std::string());
 
   registry->RegisterBooleanPref(prefs::kDevToolsDiscoverUsbDevicesEnabled,
                                 true);
   registry->RegisterBooleanPref(prefs::kDevToolsPortForwardingEnabled, false);
   registry->RegisterBooleanPref(prefs::kDevToolsPortForwardingDefaultSet,
                                 false);
   registry->RegisterDictionaryPref(prefs::kDevToolsPortForwardingConfig);
   registry->RegisterBooleanPref(prefs::kDevToolsDiscoverTCPTargetsEnabled,
-                                false);
+                                true);
   registry->RegisterListPref(prefs::kDevToolsTCPDiscoveryConfig);
   registry->RegisterDictionaryPref(prefs::kDevToolsPreferences);
 }
 
 // static
 content::WebContents* DevToolsWindow::GetInTabWebContents(
     WebContents* inspected_web_contents,
     DevToolsContentsResizingStrategy* out_strategy) {
   DevToolsWindow* window = GetInstanceForInspectedWebContents(
       inspected_web_contents);
@@ skipping 930 matching lines @@
 bool DevToolsWindow::ReloadInspectedWebContents(bool bypass_cache) {
   // Only route reload via front-end if the agent is attached.
   WebContents* wc = GetInspectedWebContents();
   if (!wc || wc->GetCrashedStatus() != base::TERMINATION_STATUS_STILL_RUNNING)
     return false;
   base::FundamentalValue bypass_cache_value(bypass_cache);
   bindings_->CallClientFunction("DevToolsAPI.reloadInspectedPage",
                                 &bypass_cache_value, nullptr, nullptr);
   return true;
 }