TaskManager: allows referencing task resources from the web ui.

chrome/browser/task_manager/task_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 113 matching lines @@
 
     // Returns true if this resource is not visible to the user because it lives
     // in the background (e.g. extension background page, background contents).
     virtual bool IsBackground() const { return false; }
 
     static const char* GetResourceTypeAsString(const Type type) {
       switch (type) {
         TASKMANAGER_RESOURCE_TYPE_LIST(TASKMANAGER_RESOURCE_TYPE_LIST_AS_STRING)
         default: return "UNKNOWN";
       }
-    };
+    }
+
+    // Returns resource identifier that is unique within single task manager
+    // session (between StartUpdating and StopUpdating).
+    int get_unique_id() { return unique_id_; }
+   protected:
+    Resource() : unique_id_(0) {}
+
+   private:
+    friend class TaskManagerModel;
+    int unique_id_;
   };
 
   // ResourceProviders are responsible for adding/removing resources to the task
   // manager. The task manager notifies the ResourceProvider that it is ready
   // to receive resource creation/termination notifications with a call to
   // StartUpdating(). At that point, the resource provider should call
   // AddResource with all the existing resources, and after that it should call
   // AddResource/RemoveResource as resources are created/terminated.
   // The provider remains the owner of the resource objects and is responsible
   // for deleting them (when StopUpdating() is called).
@@ skipping 110 matching lines @@
 
   // Returns number of registered resources.
   int ResourceCount() const;
   // Returns number of registered groups.
   int GroupCount() const;
 
   // Methods to return raw resource information.
   int64 GetNetworkUsage(int index) const;
   double GetCPUUsage(int index) const;
   int GetProcessId(int index) const;
+  int GetResourceUniqueId(int index) const;
 
   // Methods to return formatted resource information.
   string16 GetResourceTitle(int index) const;
   string16 GetResourceProfileName(int index) const;
   string16 GetResourceNetworkUsage(int index) const;
   string16 GetResourceCPUUsage(int index) const;
   string16 GetResourcePrivateMemory(int index) const;
   string16 GetResourceSharedMemory(int index) const;
   string16 GetResourcePhysicalMemory(int index) const;
   string16 GetResourceProcessId(int index) const;
@@ skipping 233 matching lines @@
   // How many calls to StartUpdating have been made without matching calls to
   // StopUpdating.
   int update_requests_;
 
   // Whether we are currently in the process of updating.
   UpdateState update_state_;
 
   // A salt lick for the goats.
   int goat_salt_;
 
+  // Resource identifier that is unique within single session.
+  int last_unique_id_;
+
   DISALLOW_COPY_AND_ASSIGN(TaskManagerModel);
 };
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_