DevTools: migrate DevTools APIs to use WebContents instead of RenderViewHost.

chrome/browser/ui/webui/extensions/extension_settings_handler.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/ui/webui/extensions/extension_settings_handler.h"
 
 #include "apps/app_load_service.h"
 #include "apps/app_window.h"
 #include "apps/app_window_registry.h"
 #include "apps/saved_files_service.h"
@@ skipping 917 matching lines @@
     DCHECK(extension);
     Profile* profile = Profile::FromWebUI(web_ui());
     if (incognito)
       profile = profile->GetOffTheRecordProfile();
     devtools_util::InspectBackgroundPage(extension, profile);
     return;
   }
 
   RenderViewHost* host = RenderViewHost::FromID(render_process_id,
                                                 render_view_id);
-  if (!host) {
+  if (!host || !WebContents::FromRenderViewHost(host)) {
     // This can happen if the host has gone away since the page was displayed.
     return;
   }
 
-  DevToolsWindow::OpenDevToolsWindow(host);
+  DevToolsWindow::OpenDevToolsWindow(WebContents::FromRenderViewHost(host));
 }
 
 void ExtensionSettingsHandler::HandleLaunchMessage(
     const base::ListValue* args) {
   CHECK_EQ(1U, args->GetSize());
   std::string extension_id;
   CHECK(args->GetString(0, &extension_id));
   const Extension* extension =
       extension_service_->GetExtensionById(extension_id, false);
   OpenApplication(AppLaunchParams(extension_service_->profile(), extension,
@@ skipping 441 matching lines @@
     extension_service_->EnableExtension(extension_id);
   } else {
     ExtensionErrorReporter::GetInstance()->ReportError(
         base::UTF8ToUTF16(JoinString(requirement_errors, ' ')),
         true);  // Be noisy.
   }
   requirements_checker_.reset();
 }
 
 }  // namespace extensions