DevTools: Extract target discovery and manipulation from DevToolsHttpHandlerImpl

chrome/browser/devtools/browser_list_tabcontents_provider.h

Index: chrome/browser/devtools/browser_list_tabcontents_provider.h
diff --git a/chrome/browser/devtools/browser_list_tabcontents_provider.h b/chrome/browser/devtools/browser_list_tabcontents_provider.h
index 9980aca41ffaa2054bfe31e82a0f98bcd4d2384e..2eef083508e275a9c3bbc0152768ff51c90c1cc9 100644
--- a/chrome/browser/devtools/browser_list_tabcontents_provider.h
+++ b/chrome/browser/devtools/browser_list_tabcontents_provider.h
@@ -24,15 +24,23 @@ class BrowserListTabContentsProvider
   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);
 };