Add --auto-open-devtools-for-tabs flag.

chrome/browser/devtools/chrome_devtools_discovery_provider.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 "chrome/browser/devtools/chrome_devtools_discovery_provider.h"
 
+#include "base/command_line.h"
 #include "chrome/browser/devtools/devtools_target_impl.h"
+#include "chrome/browser/devtools/devtools_window.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/browser_navigator_params.h"
+#include "chrome/common/chrome_switches.h"
 
 namespace {
 
 scoped_ptr<devtools_discovery::DevToolsTargetDescriptor>
 CreateNewChromeTab(const GURL& url) {
   chrome::NavigateParams params(ProfileManager::GetLastUsedProfile(),
       url, ui::PAGE_TRANSITION_AUTO_TOPLEVEL);
   params.disposition = NEW_FOREGROUND_TAB;
   chrome::Navigate(&params);
   if (!params.target_contents)
     return scoped_ptr<devtools_discovery::DevToolsTargetDescriptor>();
   return DevToolsTargetImpl::CreateForTab(params.target_contents);
 }
 
 }  // namespace
 
-ChromeDevToolsDiscoveryProvider::ChromeDevToolsDiscoveryProvider() {
+ChromeDevToolsDiscoveryProvider::ChromeDevToolsDiscoveryProvider()
+    : browser_tab_strip_tracker_(this, nullptr, nullptr) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(

[pfeldman, 2016/02/12 02:15:08]

How does this make sense here?

+      switches::kAutoOpenDevToolsForTabs)) {
+    browser_tab_strip_tracker_.Init(
+        BrowserTabStripTracker::InitWith::ALL_BROWERS);
+  }
 }
 
 ChromeDevToolsDiscoveryProvider::~ChromeDevToolsDiscoveryProvider() {
 }
 
+void ChromeDevToolsDiscoveryProvider::TabInsertedAt(
+    content::WebContents* contents,
+    int index,
+    bool foreground) {
+  DevToolsWindow::OpenDevToolsWindow(contents);
+}
+
 devtools_discovery::DevToolsTargetDescriptor::List
 ChromeDevToolsDiscoveryProvider::GetDescriptors() {
   std::vector<DevToolsTargetImpl*> list = DevToolsTargetImpl::EnumerateAll();
   devtools_discovery::DevToolsTargetDescriptor::List result;
   result.reserve(list.size());
   for (const auto& descriptor : list)
     result.push_back(descriptor);
   return result;
 }
 
 // static
 void ChromeDevToolsDiscoveryProvider::Install() {
   devtools_discovery::DevToolsDiscoveryManager* discovery_manager =
       devtools_discovery::DevToolsDiscoveryManager::GetInstance();
   discovery_manager->AddProvider(
       make_scoped_ptr(new ChromeDevToolsDiscoveryProvider()));
   discovery_manager->SetCreateCallback(base::Bind(&CreateNewChromeTab));
 }