Exposing the child process unique ID through the task manager.

chrome/browser/task_manager/task_manager.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_TASK_MANAGER_TASK_MANAGER_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_H_
 #pragma once
 
 #include <map>
 #include <utility>
@@ skipping 50 matching lines @@
 
     enum Type {
       UNKNOWN = 0,
       TASKMANAGER_RESOURCE_TYPE_LIST(TASKMANAGER_RESOURCE_TYPE_LIST_ENUM)
     };
 
     virtual string16 GetTitle() const = 0;
     virtual string16 GetProfileName() const = 0;
     virtual SkBitmap GetIcon() const = 0;
     virtual base::ProcessHandle GetProcess() const = 0;
+    virtual int GetUniqueChildProcessId() const = 0;
     virtual Type GetType() const = 0;
     virtual int GetRoutingID() const { return 0; }
 
     virtual bool ReportsCacheStats() const { return false; }
     virtual WebKit::WebCache::ResourceTypeStats GetWebCoreCacheStats() const {
       return WebKit::WebCache::ResourceTypeStats();
     }
 
     virtual bool ReportsFPS() const { return false; }
     virtual float GetFPS() const { return 0.0f; }
@@ skipping 288 matching lines @@
   int GetResourceIndexForGroup(int group_index, int index_in_group) const;
 
   // Compares values in column |col_id| and rows |row1|, |row2|.
   // Returns -1 if value in |row1| is less than value in |row2|,
   // 0 if they are equal, and 1 otherwise.
   int CompareValues(int row1, int row2, int col_id) const;
 
   // Returns process handle for given resource.
   base::ProcessHandle GetResourceProcessHandle(int index) const;
 
+  // Returns the unique child process ID.

[Charlie Reis, 2012/04/04 17:53:40]

This needs more of a description to distinguish it from the operating system's
process ID.  We should also mention it's not displayed to the user in the Task
Manager, but is useful for internal tracking and for extension APIs.

[nasko, 2012/04/04 18:13:19]

Done.

+  int GetUniqueChildProcessId(int index) const;
+
   // Returns the type of the given resource.
   TaskManager::Resource::Type GetResourceType(int index) const;
 
   // Returns TabContents of given resource or NULL if not applicable.
   TabContentsWrapper* GetResourceTabContents(int index) const;
 
   // Returns Extension of given resource or NULL if not applicable.
   const Extension* GetResourceExtension(int index) const;
 
   void AddResource(TaskManager::Resource* resource);
@@ skipping 153 matching lines @@
   // A salt lick for the goats.
   uint64 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_