DevTools: add initial support for shared workers debugging

content/browser/debugger/devtools_window.cc

 // Copyright (c) 2011 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 "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/stringprintf.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 77 matching lines @@
   registrar_.Add(this,
                  NotificationType::LOAD_STOP,
                  Source<NavigationController>(&tab_contents_->controller()));
   registrar_.Add(this,
                  NotificationType::TAB_CLOSING,
                  Source<NavigationController>(&tab_contents_->controller()));
   registrar_.Add(
       this,
       NotificationType::BROWSER_THEME_CHANGED,
       Source<ThemeService>(ThemeServiceFactory::GetForProfile(profile_)));
-  TabContents* tab = inspected_rvh->delegate()->GetAsTabContents();
-  if (tab)
-    inspected_tab_ = TabContentsWrapper::GetCurrentWrapperForContents(tab);
+  // There is now inspected_rvh in case of shared workers.
+  if (inspected_rvh) {
+    TabContents* tab = inspected_rvh->delegate()->GetAsTabContents();
+    if (tab)
+      inspected_tab_ = TabContentsWrapper::GetCurrentWrapperForContents(tab);
+  }
 }
 
 DevToolsWindow::~DevToolsWindow() {
 }
 
 DevToolsWindow* DevToolsWindow::AsDevToolsWindow() {
   return this;
 }
 
 void DevToolsWindow::SendMessageToClient(const IPC::Message& message) {
@@ skipping 354 matching lines @@
   if (docked_) {
     if (event.windowsKeyCode == 0x08) {
       // Do not navigate back in history on Windows (http://crbug.com/74156).
       return;
     }
     BrowserWindow* inspected_window = GetInspectedBrowserWindow();
     if (inspected_window)
       inspected_window->HandleKeyboardEvent(event);
   }
 }