DevTools: Extract target discovery and manipulation from DevToolsHttpHandlerImpl

chrome/browser/devtools/browser_list_tabcontents_provider.h

 // 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.
 
 #ifndef CHROME_BROWSER_DEVTOOLS_BROWSER_LIST_TABCONTENTS_PROVIDER_H_
 #define CHROME_BROWSER_DEVTOOLS_BROWSER_LIST_TABCONTENTS_PROVIDER_H_
 
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "content/public/browser/devtools_http_handler_delegate.h"
 
 class BrowserListTabContentsProvider
     : public content::DevToolsHttpHandlerDelegate {
  public:
   explicit BrowserListTabContentsProvider(
       chrome::HostDesktopType host_desktop_type);
   virtual ~BrowserListTabContentsProvider();
 
   // DevToolsHttpProtocolHandler::Delegate overrides.
   virtual std::string GetDiscoveryPageHTML() OVERRIDE;
   virtual bool BundlesFrontendResources() OVERRIDE;
   virtual base::FilePath GetDebugFrontendDir() OVERRIDE;
-  virtual std::string GetPageThumbnailData(const GURL& url) OVERRIDE;
-  virtual content::RenderViewHost* CreateNewTarget() OVERRIDE;
-  virtual TargetType GetTargetType(content::RenderViewHost*) OVERRIDE;
-  virtual std::string GetViewDescription(content::RenderViewHost*) OVERRIDE;
+  virtual bool SupportsPageThumbnails() OVERRIDE;
+  virtual std::string GetPageThumbnailData(const std::string& id) OVERRIDE;
+  virtual Target* CreateNewTarget() OVERRIDE;
+  virtual bool ActivateTarget(const std::string& id) OVERRIDE;
+  virtual bool CloseTarget(const std::string& id) OVERRIDE;
+  virtual scoped_refptr<content::DevToolsAgentHost> GetAgentHost(
+      const std::string& id) OVERRIDE;
+  virtual void RequestTargets(TargetCallback callback) OVERRIDE;
   virtual scoped_ptr<net::StreamListenSocket> CreateSocketForTethering(
       net::StreamListenSocket::Delegate* delegate,
       std::string* name) OVERRIDE;
 
  private:
+  TargetList CollectWorkerTargets();
+  void RespondWithTargetList(TargetCallback callback,
+                             const TargetList& worker_targets);
+
   chrome::HostDesktopType host_desktop_type_;
   DISALLOW_COPY_AND_ASSIGN(BrowserListTabContentsProvider);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_BROWSER_LIST_TABCONTENTS_PROVIDER_H_