[DevTools] Make DevTools clients talk directly to DevToolsAgentHost instead of using DevToolsManage…

content/browser/devtools/devtools_manager_impl.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 CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_MANAGER_IMPL_H_
 #define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_MANAGER_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/singleton.h"
-#include "content/browser/devtools/devtools_agent_host_impl.h"
-#include "content/common/content_export.h"
-#include "content/public/browser/devtools_client_host.h"
-#include "content/public/browser/devtools_manager.h"
-
-class GURL;
-
-namespace IPC {
-class Message;
-}
 
 namespace content {
 
-class BrowserContext;
 class DevToolsManagerDelegate;
-class RenderViewHost;
 
-// This class is a singleton that manages DevToolsClientHost instances and
-// routes messages between developer tools clients and agents.
-//
-// Methods below that accept inspected RenderViewHost as a parameter are
-// just convenience methods that call corresponding methods accepting
-// DevToolAgentHost.
-class CONTENT_EXPORT DevToolsManagerImpl
-    : public DevToolsAgentHostImpl::CloseListener,
-      public DevToolsManager {
+// This class is a singleton that manage global DevTools state for the whole
+// browser.
+class DevToolsManagerImpl {
  public:
   // Returns single instance of this class. The instance is destroyed on the
   // browser main loop exit so this method MUST NOT be called after that point.
   static DevToolsManagerImpl* GetInstance();
 
   DevToolsManagerImpl();
   virtual ~DevToolsManagerImpl();
 
-  // Opens the inspector for |agent_host|.
-  void Inspect(BrowserContext* browser_context, DevToolsAgentHost* agent_host);
-
-  void DispatchOnInspectorFrontend(DevToolsAgentHost* agent_host,
-                                   const std::string& message);
-
   DevToolsManagerDelegate* delegate() const { return delegate_.get(); }
-
-  // DevToolsManager implementation
-  virtual bool DispatchOnInspectorBackend(DevToolsClientHost* from,
-                                          const std::string& message) OVERRIDE;
-  virtual void CloseAllClientHosts() OVERRIDE;
-  virtual DevToolsAgentHost* GetDevToolsAgentHostFor(
-      DevToolsClientHost* client_host) OVERRIDE;
-  virtual void RegisterDevToolsClientHostFor(
-      DevToolsAgentHost* agent_host,
-      DevToolsClientHost* client_host) OVERRIDE;
-  virtual void ClientHostClosing(DevToolsClientHost* host) OVERRIDE;
-  virtual void AddAgentStateCallback(const Callback& callback) OVERRIDE;
-  virtual void RemoveAgentStateCallback(const Callback& callback) OVERRIDE;
+  void OnClientAttached();
+  void OnClientDetached();
 
  private:
-  friend class DevToolsAgentHostImpl;
-  friend class RenderViewDevToolsAgentHost;
   friend struct DefaultSingletonTraits<DevToolsManagerImpl>;
 
-  // DevToolsAgentHost::CloseListener implementation.
-  virtual void AgentHostClosing(DevToolsAgentHostImpl* host) OVERRIDE;
-
-  void BindClientHost(DevToolsAgentHostImpl* agent_host,
-                      DevToolsClientHost* client_host);
-  void UnbindClientHost(DevToolsAgentHostImpl* agent_host,
-                        DevToolsClientHost* client_host);
-
-  DevToolsClientHost* GetDevToolsClientHostFor(
-      DevToolsAgentHostImpl* agent_host);
-
-  void UnregisterDevToolsClientHostFor(DevToolsAgentHostImpl* agent_host);
-
-  void NotifyObservers(DevToolsAgentHost* agent_host, bool attached);
-
-  // These two maps are for tracking dependencies between inspected contents and
-  // their DevToolsClientHosts. They are useful for routing devtools messages
-  // and allow us to have at most one devtools client host per contents.
-  //
-  // DevToolsManagerImpl starts listening to DevToolsClientHosts when they are
-  // put into these maps and removes them when they are closing.
-  typedef std::map<DevToolsAgentHostImpl*, DevToolsClientHost*>
-      AgentToClientHostMap;
-  AgentToClientHostMap agent_to_client_host_;
-
-  typedef std::map<DevToolsClientHost*, scoped_refptr<DevToolsAgentHostImpl> >
-      ClientToAgentHostMap;
-  ClientToAgentHostMap client_to_agent_host_;
-
-  typedef std::vector<const Callback*> CallbackContainer;
-  CallbackContainer callbacks_;
-
   scoped_ptr<DevToolsManagerDelegate> delegate_;
+  int client_count_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsManagerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_MANAGER_IMPL_H_